LU-5435 libcfs: copy out ioctl inline buffer

[fs/lustre-release.git] / libcfs / libcfs / util / l_ioctl.c

diff --git a/libcfs/libcfs/util/l_ioctl.c b/libcfs/libcfs/util/l_ioctl.c
index e27c404..fe35073 100644 (file)
--- a/libcfs/libcfs/util/l_ioctl.c
+++ b/libcfs/libcfs/util/l_ioctl.c
@@ -340,3 +340,21 @@ int libcfs_ioctl_pack(struct libcfs_ioctl_data *data, char **pbuf,
        return 0;
 }
 
+void
+libcfs_ioctl_unpack(struct libcfs_ioctl_data *data, char *pbuf)
+{
+       struct libcfs_ioctl_data *overlay = (struct libcfs_ioctl_data *)pbuf;
+       char *ptr;
+
+       /* Preserve the caller's buffer pointers */
+       overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
+       overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
+
+       memcpy(data, pbuf, sizeof(*data));
+       ptr = &overlay->ioc_bulk[0];
+
+       if (data->ioc_inlbuf1 != NULL)
+               LOGU(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
+       if (data->ioc_inlbuf2 != NULL)
+               LOGU(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
+}