[PATCH v2 04/20] lib/cobalt: Introduce rtdm.h

Some code will be re-used later by the time64_t compile unit. Move that
code into rtdm.h, so code duplication is avoided.

No modifications to the code itself.

Signed-off-by: Florian Bezdeka <[email protected]>
---
 lib/cobalt/Makefile.am |  1 +
 lib/cobalt/rtdm.c      | 34 ++++++----------------------------
 lib/cobalt/rtdm.h      | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+), 28 deletions(-)

diff --git a/lib/cobalt/Makefile.am b/lib/cobalt/Makefile.am
index 576fb980f72b342e118bfacb061b5634bda420a2..0a8041dc30efae3eebacd376ac72f4b317f621b3 100644
--- a/lib/cobalt/Makefile.am
+++ b/lib/cobalt/Makefile.am
@@ -5,6 +5,7 @@ noinst_HEADERS =	\
 	current.h	\
 	mq.h		\
 	mutex.h		\
+	rtdm.h		\
 	umm.h		\
 	internal.h
 
diff --git a/lib/cobalt/rtdm.c b/lib/cobalt/rtdm.c
index 119ba3f83dfd023291ad10b5aad496905db36a47..ec950e15db921b32458d746d300ff6c542a8b23b 100644
--- a/lib/cobalt/rtdm.c
+++ b/lib/cobalt/rtdm.c
@@ -17,34 +17,25 @@
   USA.
  */
 
-#include <errno.h>
+#include "rtdm.h"
+
+#include <asm/xenomai/syscall.h>
+#include <cobalt/uapi/syscall.h>
+#include <rtdm/rtdm.h>
+
 #include <string.h>
 #include <stdarg.h>
 #include <pthread.h>
 #include <fcntl.h>
-#include <unistd.h>
 #include <stdlib.h>
 #include <sys/socket.h>
 #include <sys/mman.h>
-#include <rtdm/rtdm.h>
-#include <cobalt/uapi/syscall.h>
-#include <asm/xenomai/syscall.h>
 
 /* support for very old c libraries not supporting O_TMPFILE */
 #ifndef O_TMPFILE
 #define O_TMPFILE (020000000 | 0200000)
 #endif
 
-
-static inline int set_errno(int ret)
-{
-	if (ret >= 0)
-		return ret;
-
-	errno = -ret;
-	return -1;
-}
-
 static int do_open(const char *path, int oflag, mode_t mode)
 {
 	int fd, oldtype;
@@ -160,19 +151,6 @@ COBALT_IMPL(int, close, (int fd))
 	return __STD(close(fd));
 }
 
-static int do_ioctl(int fd, unsigned int request, void *arg)
-{
-	int ret, oldtype;
-
-	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype);
-
-	ret = XENOMAI_SYSCALL3(sc_cobalt_ioctl,	fd, request, arg);
-
-	pthread_setcanceltype(oldtype, NULL);
-
-	return ret;
-}
-
 COBALT_IMPL(int, fcntl, (int fd, int cmd, ...))
 {
 	va_list ap;
diff --git a/lib/cobalt/rtdm.h b/lib/cobalt/rtdm.h
new file mode 100644
index 0000000000000000000000000000000000000000..6f3f60ee96d5d474b06b73ee2cb520fa1e846e75
--- /dev/null
+++ b/lib/cobalt/rtdm.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: LGPL-2.0-or-later */
+
+/*
+ * Copyright (C) 2026 Florian Bezdeka <[email protected]>.
+ */
+
+#ifndef _LIB_COBALT_RTDM_H
+#define _LIB_COBALT_RTDM_H
+
+#include <asm/xenomai/syscall.h>
+
+#include <errno.h>
+#include <pthread.h>
+
+static int set_errno(int ret)
+{
+	if (ret >= 0)
+		return ret;
+
+	errno = -ret;
+	return -1;
+}
+
+static int do_ioctl(int fd, unsigned int request, void *arg)
+{
+	int ret, oldtype;
+
+	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldtype);
+
+	ret = XENOMAI_SYSCALL3(sc_cobalt_ioctl,	fd, request, arg);
+
+	pthread_setcanceltype(oldtype, NULL);
+
+	return ret;
+}
+
+#endif //_LIB_COBALT_RTDM_H

-- 
2.53.0