From 87d04a3339252c023bf9025c38c0ec7d3f5ee817 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Thu, 13 Jul 2017 13:46:52 +0200
Subject: partx: move partx.h to include/

Let's make the ioctls usable also for libfdisk.

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 include/Makemodule.am |  1 +
 include/partx.h       | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 include/partx.h

(limited to 'include')

diff --git a/include/Makemodule.am b/include/Makemodule.am
index 7ea1a4824..237400b05 100644
--- a/include/Makemodule.am
+++ b/include/Makemodule.am
@@ -34,6 +34,7 @@ dist_noinst_HEADERS += \
 	include/optutils.h \
 	include/pager.h \
 	include/pamfail.h \
+	include/partx.h \
 	include/path.h \
 	include/pathnames.h \
 	include/plymouth-ctrl.h \
diff --git a/include/partx.h b/include/partx.h
new file mode 100644
index 000000000..96206bd7c
--- /dev/null
+++ b/include/partx.h
@@ -0,0 +1,62 @@
+#ifndef UTIL_LINUX_PARTX_H
+#define UTIL_LINUX_PARTX_H
+
+#include <sys/ioctl.h>
+#include <linux/blkpg.h>
+
+#ifndef BLKPG_ADD_PARTITION
+# define BLKPG_ADD_PARTITION	1
+#endif
+
+#ifndef BLKPG_DEL_PARTITION
+# define BLKPG_DEL_PARTITION	2
+#endif
+
+#ifndef BLKPG_RESIZE_PARTITION
+# define BLKPG_RESIZE_PARTITION	3		/* since Linux 3.6 */
+#endif
+
+
+#define INIT_BLKPG_PARTITION(_partno, _start, _size) {	\
+		.pno    = (_partno),			\
+		.start  = (_start) << 9,		\
+		.length = (_size) << 9,			\
+		.devname[0] = 0,			\
+		.volname[0] = 0				\
+}
+
+#define INIT_BLKPG_ARG(_action, _part) {		\
+		.op      = (_action),			\
+		.flags   = 0,				\
+		.datalen = sizeof(*(_part)),		\
+		.data = (_part)				\
+}
+
+
+static inline int partx_del_partition(int fd, unsigned int partno)
+{
+	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, 0, 0);
+	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_DEL_PARTITION, &p);
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+static inline int partx_add_partition(int fd, int partno,
+			uint64_t start, uint64_t size)
+{
+	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
+	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_ADD_PARTITION, &p);
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+static inline int partx_resize_partition(int fd, int partno,
+			uint64_t start, uint64_t size)
+{
+	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
+	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_RESIZE_PARTITION, &p);
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+#endif /*  UTIL_LINUX_PARTX_H */
-- 
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