libubi: add ubi_leb_unmap interface

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/ubi-utils/include/libubi.h b/ubi-utils/include/libubi.h
index 243bcbb..4ffe1e8 100644
--- a/ubi-utils/include/libubi.h
+++ b/ubi-utils/include/libubi.h
@@ -404,6 +404,16 @@ int ubi_leb_change_start(libubi_t desc, int fd, int lnum, int bytes, int dtype);
  */
 int ubi_set_property(int fd, uint8_t property, uint64_t value);
 
+/**
+ * ubi_leb_unmap - unmap a logical eraseblock.
+ * @fd: volume character device file descriptor
+ * @lnum: logical eraseblock to unmap
+ *
+ * This function unmaps LEB @lnum and returns zero in case of success and a
+ * negative error code in case of error.
+ */
+int ubi_leb_unmap(int fd, int lnum);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/ubi-utils/src/libubi.c b/ubi-utils/src/libubi.c
index c63beeb..5c8ce9e 100644
--- a/ubi-utils/src/libubi.c
+++ b/ubi-utils/src/libubi.c
@@ -1250,3 +1250,8 @@ int ubi_set_property(int fd, uint8_t property, uint64_t value)
 
 	return ioctl(fd, UBI_IOCSETPROP, &r);
 }
+
+int ubi_leb_unmap(int fd, int lnum)
+{
+	return ioctl(fd, UBI_IOCEBUNMAP, &lnum);
+}