Introduce LTTNG_KERNEL_SESSION_SET_NAME

[lttng-modules.git] / lttng-abi.c

diff --git a/lttng-abi.c b/lttng-abi.c
index ca943791fdc9f2875cfd6c9412c2686bd22e85ff..aab2caca467f15eadcfb916858931b134daad6d5 100644 (file)
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -453,6 +453,23 @@ fd_error:
        return ret;
 }
 
+static
+int lttng_abi_session_set_name(struct lttng_session *session,
+               struct lttng_kernel_session_name *name)
+{
+       size_t len;
+
+       len = strnlen(name->name, LTTNG_KERNEL_SESSION_NAME_LEN);
+
+       if (len == LTTNG_KERNEL_SESSION_NAME_LEN) {
+               /* Name is too long/malformed */
+               return -EINVAL;
+       }
+
+       strcpy(session->name, name->name);
+       return 0;
+}
+
 /**
  *     lttng_session_ioctl - lttng session fd ioctl
  *
@@ -562,6 +579,16 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                return lttng_session_metadata_regenerate(session);
        case LTTNG_KERNEL_SESSION_STATEDUMP:
                return lttng_session_statedump(session);
+       case LTTNG_KERNEL_SESSION_SET_NAME:
+       {
+               struct lttng_kernel_session_name name;
+
+               if (copy_from_user(&name,
+                               (struct lttng_kernel_session_name __user *) arg,
+                               sizeof(struct lttng_kernel_session_name)))
+                       return -EFAULT;
+               return lttng_abi_session_set_name(session, &name);
+       }
        default:
                return -ENOIOCTLCMD;
        }