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-rw-r--r--disk-utils/partx.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/disk-utils/partx.h b/disk-utils/partx.h
index ed0fd0aa4..254cd85cc 100644
--- a/disk-utils/partx.h
+++ b/disk-utils/partx.h
@@ -4,6 +4,18 @@
#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;
@@ -41,4 +53,23 @@ static inline int partx_add_partition(int fd, int partno,
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 */