From c0be1a95fd94a57d044e5364dabede29292bfaff Mon Sep 17 00:00:00 2001
From: Stephan Bosch <stephan.bosch@dovecot.fi>
Date: Sat, 7 Apr 2018 01:00:46 +0200
Subject: [PATCH] configure: Create a definition for UOFF_T_MAX.

---
 configure.ac     |  4 ++++
 m4/uoff_t_max.m4 | 13 +++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 m4/uoff_t_max.m4

diff --git a/configure.ac b/configure.ac
index 46ea4bcfd7..59e2381fb8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -391,6 +391,7 @@ AC_TYPEOF(off_t, long int long-long)
 case "$typeof_off_t" in
   int)
     offt_max=INT_MAX
+    uofft_max=UINT_MAX
     uofft_fmt="u"
     if test "$have_uoff_t" != "yes"; then
       AC_DEFINE(UOFF_T_INT,, [Define if off_t is int])
@@ -399,6 +400,7 @@ case "$typeof_off_t" in
     ;;
   long)
     offt_max=LONG_MAX
+    uofft_max=ULONG_MAX
     uofft_fmt="lu"
     if test "$have_uoff_t" != "yes"; then
       AC_DEFINE(UOFF_T_LONG,, [Define if off_t is long])
@@ -407,6 +409,7 @@ case "$typeof_off_t" in
     ;;
   "long long")
     offt_max=LLONG_MAX
+    uofft_max=ULLONG_MAX
     uofft_fmt="llu"
     if test "$have_uoff_t" != "yes"; then
       AC_DEFINE(UOFF_T_LONG_LONG,, [Define if off_t is long long])
@@ -420,6 +423,7 @@ esac
 
 DOVECOT_DIRENT_DTYPE
 DOVECOT_OFF_T_MAX
+DOVECOT_UOFF_T_MAX
 
 AC_DEFINE_UNQUOTED(PRIuUOFF_T, "$uofft_fmt", [printf() format for uoff_t])
 
diff --git a/m4/uoff_t_max.m4 b/m4/uoff_t_max.m4
new file mode 100644
index 0000000000..78ca4d19a0
--- /dev/null
+++ b/m4/uoff_t_max.m4
@@ -0,0 +1,13 @@
+AC_DEFUN([DOVECOT_UOFF_T_MAX], [
+  dnl * Do we have UOFF_T_MAX?
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+    #include <limits.h>
+    #include <sys/types.h>
+  ]], [[
+    uoff_t i = UOFF_T_MAX;
+  ]])],[
+    :
+  ],[
+    AC_DEFINE_UNQUOTED(UOFF_T_MAX, $uofft_max, [Maximum value of uoff_t])
+  ])
+])
-- 
2.47.3