Imported Upstream version 2.22upstream/2.22upstream

1 files changed, 75 insertions, 0 deletions

diff --git a/disk-utils/partx.h b/disk-utils/partx.h
new file mode 100644
index 0000000..254cd85
--- /dev/null
+++ b/disk-utils/partx.h
@@ -0,0 +1,75 @@
+#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
+
+static inline int partx_del_partition(int fd, unsigned int partno)
+{
+	struct blkpg_ioctl_arg a;
+	struct blkpg_partition p;
+
+	p.pno = partno;
+	p.start = 0;
+	p.length = 0;
+	p.devname[0] = 0;
+	p.volname[0] = 0;
+	a.op = BLKPG_DEL_PARTITION;
+	a.flags = 0;
+	a.datalen = sizeof(p);
+	a.data = &p;
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+static inline int partx_add_partition(int fd, int partno,
+			uint64_t start, uint64_t size)
+{
+	struct blkpg_ioctl_arg a;
+	struct blkpg_partition p;
+
+	p.pno = partno;
+	p.start = start << 9;
+	p.length = size << 9;
+	p.devname[0] = 0;
+	p.volname[0] = 0;
+	a.op = BLKPG_ADD_PARTITION;
+	a.flags = 0;
+	a.datalen = sizeof(p);
+	a.data = &p;
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+static inline int partx_resize_partition(int fd, int partno,
+			uint64_t start, uint64_t size)
+{
+	struct blkpg_ioctl_arg a;
+	struct blkpg_partition p;
+
+	p.pno = partno;
+	p.start = start << 9;
+	p.length = size << 9;
+	p.devname[0] = 0;
+	p.volname[0] = 0;
+	a.op = BLKPG_RESIZE_PARTITION;
+	a.flags = 0;
+	a.datalen = sizeof(p);
+	a.data = &p;
+
+	return ioctl(fd, BLKPG, &a);
+}
+
+#endif /*  UTIL_LINUX_PARTX_H */