b=13698 llapi_get_version

[fs/lustre-release.git] / lustre / utils / liblustreapi.c

diff --git a/lustre/utils/liblustreapi.c b/lustre/utils/liblustreapi.c
index 7631b51..0855805 100644 (file)
--- a/lustre/utils/liblustreapi.c
+++ b/lustre/utils/liblustreapi.c
@@ -3270,3 +3270,31 @@ int llapi_get_connect_flags(const char *mnt, __u64 *flags)
                           "ioctl on %s for getting connect flags failed", mnt);
         return rc;
 }
+
+int llapi_get_version(char *buffer, int buffer_size,
+                      char **version)
+{
+        int rc;
+        int fd;
+        struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
+
+        fd = open(OBD_DEV_PATH, O_RDONLY);
+        if (fd == -1)
+                return -errno;
+
+        memset(buffer, 0, buffer_size);
+        data->ioc_version = OBD_IOCTL_VERSION;
+        data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
+        data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
+        data->ioc_len = obd_ioctl_packlen(data);
+
+        rc = ioctl(fd, OBD_GET_VERSION, buffer);
+        if (rc == -1) {
+                rc = errno;
+                close(fd);
+                return -rc;
+        }
+        close(fd);
+        *version = data->ioc_bulk;
+        return 0;
+}