From d98b913aa9a0dd40a9373d65882f1cb742d033af Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Sat, 24 Sep 2005 04:56:51 +0000
Subject: r10466: work around missing pread/pwrite declaration on openbsd (This
 used to be commit e615f36733966f9992670e3650fbe9b20d7d218c)

---
 source4/lib/tdb/aclocal.m4           | 12 ++++++++++++
 source4/lib/tdb/common/tdb_private.h |  8 ++++++++
 source4/lib/tdb/config.m4            |  3 +++
 3 files changed, 23 insertions(+)
 create mode 100644 source4/lib/tdb/aclocal.m4

(limited to 'source4')

diff --git a/source4/lib/tdb/aclocal.m4 b/source4/lib/tdb/aclocal.m4
new file mode 100644
index 0000000000..cdc2a2fa52
--- /dev/null
+++ b/source4/lib/tdb/aclocal.m4
@@ -0,0 +1,12 @@
+dnl see if a declaration exists for a function or variable
+dnl defines HAVE_function_DECL if it exists
+dnl AC_HAVE_DECL(var, includes)
+AC_DEFUN(AC_HAVE_DECL,
+[
+ AC_CACHE_CHECK([for $1 declaration],ac_cv_have_$1_decl,[
+    AC_TRY_COMPILE([$2],[int i = (int)$1],
+        ac_cv_have_$1_decl=yes,ac_cv_have_$1_decl=no)])
+ if test x"$ac_cv_have_$1_decl" = x"yes"; then
+    AC_DEFINE([HAVE_]translit([$1], [a-z], [A-Z])[_DECL],1,[Whether $1() is available])
+ fi
+])
diff --git a/source4/lib/tdb/common/tdb_private.h b/source4/lib/tdb/common/tdb_private.h
index 2b2d6de411..a451dff0af 100644
--- a/source4/lib/tdb/common/tdb_private.h
+++ b/source4/lib/tdb/common/tdb_private.h
@@ -45,6 +45,14 @@
 #include <sys/stat.h>
 #include "config.h"
 #include "tdb.h"
+
+#ifndef HAVE_PREAD_DECL
+ssize_t pread(int fd, void *buf, size_t count, off_t offset);
+#endif
+#ifndef HAVE_PWRITE_DECL
+ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
+#endif
+
 #else
 #include "includes.h"
 #include "lib/tdb/include/tdb.h"
diff --git a/source4/lib/tdb/config.m4 b/source4/lib/tdb/config.m4
index 2ebd29993d..31c33552ea 100644
--- a/source4/lib/tdb/config.m4
+++ b/source4/lib/tdb/config.m4
@@ -1,6 +1,9 @@
 AC_CHECK_FUNCS(mmap pread pwrite)
 AC_CHECK_HEADERS(getopt.h)
 
+AC_HAVE_DECL(pread, [#include <unistd.h>])
+AC_HAVE_DECL(pwrite, [#include <unistd.h>])
+
 if test x"$experimental" = x"yes"; then
 	SMB_LIBRARY_ENABLE(libtdb,YES)
 fi
-- 
cgit