diff options
author | Zhihao Cheng <chengzhihao1@huawei.com> | 2024-11-11 16:36:53 +0800 |
---|---|---|
committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2024-11-11 10:32:45 +0100 |
commit | d539a3951fc5eba852b1fd79e151e1879611a5df (patch) | |
tree | 5d822202ea3e5e6783cb789efe5f9f924946fd86 | |
parent | 008d2cad386862ce0f0abb20df291a3d29313b96 (diff) |
libubi: Add new interface ubi_leb_map()
Add ubi_leb_map() implementation, it is used in UBIFS linux kernel libs.
This is a preparation for replacing implementation of UBIFS utils with
linux kernel libs.
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
-rw-r--r-- | include/libubi.h | 15 | ||||
-rw-r--r-- | lib/libubi.c | 10 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/libubi.h b/include/libubi.h index 9cb5037..b5b3d8f 100644 --- a/include/libubi.h +++ b/include/libubi.h @@ -487,6 +487,21 @@ int ubi_leb_unmap(int fd, int lnum); */ int ubi_is_mapped(int fd, int lnum); +/** + * ubi_leb_map - map logical eraseblock to a physical eraseblock. + * @fd: volume character device file descriptor + * @lnum: logical eraseblock number + * + * This function maps an un-mapped logical eraseblock @lnum to a physical + * eraseblock. This means, that after a successful invocation of this + * function the logical eraseblock @lnum will be empty (contain only %0xFF + * bytes) and be mapped to a physical eraseblock, even if an unclean reboot + * happens. + * + * This function returns zero in case of success, %-1 in case of failures. + */ +int ubi_leb_map(int fd, int lnum); + #ifdef __cplusplus } #endif diff --git a/lib/libubi.c b/lib/libubi.c index 6b57e50..86736dd 100644 --- a/lib/libubi.c +++ b/lib/libubi.c @@ -1364,3 +1364,13 @@ int ubi_is_mapped(int fd, int lnum) { return ioctl(fd, UBI_IOCEBISMAP, &lnum); } + +int ubi_leb_map(int fd, int lnum) +{ + struct ubi_map_req r; + + memset(&r, 0, sizeof(struct ubi_map_req)); + r.lnum = lnum; + + return ioctl(fd, UBI_IOCEBMAP, &r); +} |