tests: avoid triggering -Wstringop-truncation in ioctl_dm.c

* tests/ioctl_dm.c: Replace strncpy calls with memcpy as the character
arrays being copied are not C strings.

diff --git a/tests/ioctl_dm.c b/tests/ioctl_dm.c
index 1e831dfe898099a9dd0d19eaf3143378ee040271..d9bf20ed8ad3129fa36f06dd5728a9c10f80008d 100644 (file)
--- a/tests/ioctl_dm.c
+++ b/tests/ioctl_dm.c
@@ -143,7 +143,7 @@ init_dm_target_spec(struct dm_target_spec *ptr, uint32_t id)
        ptr->length       = dts_length_base + dts_length_step * id;
        ptr->status       = dts_status_base + dts_status_step * id;
 
-       strncpy(ptr->target_type, str129 +
+       memcpy(ptr->target_type, str129 +
                id % (sizeof(str129) - sizeof(ptr->target_type)),
                id % (sizeof(ptr->target_type) + 1));
        if (id % (sizeof(ptr->target_type) + 1) < sizeof(ptr->target_type))
@@ -252,8 +252,8 @@ main(void)
 
        /* Unterminated name/uuid */
        init_s(dm_arg, min_sizeof_dm_ioctl, 0);
-       strncpy(dm_arg->name, str129, sizeof(dm_arg->name));
-       strncpy(dm_arg->uuid, str129, sizeof(dm_arg->uuid));
+       memcpy(dm_arg->name, str129, sizeof(dm_arg->name));
+       memcpy(dm_arg->uuid, str129, sizeof(dm_arg->uuid));
        ioctl(-1, DM_VERSION, dm_arg);
        printf("ioctl(-1, DM_VERSION, {version=4.1.2, data_size=%zu, "
               "dev=makedev(18, 52), name=\"%.127s\"..., uuid=\"%.128s\"..., "
@@ -511,7 +511,7 @@ main(void)
                                         target##id_next) - \
                                offsetof(struct dm_table_open_test, \
                                         target##id); \
-                       strncpy(dm_arg_open3->param##id, str129 + id * 2, id); \
+                       memcpy(dm_arg_open3->param##id, str129 + id * 2, id); \
                        dm_arg_open3->param##id[id] = '\0'; \
                } while (0)
        #define PRINT_DM_TARGET(id) \