ID tracker: implement vpid/uid/vuid/gid/vgid trackers

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

diff --git a/lttng-abi.c b/lttng-abi.c
index c45c10f42c747fa4d553d08d18900b5bca1a9e08..18b115079138806001ef658ed2911cf718a0dde4 100644 (file)
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -463,6 +463,27 @@ fd_error:
        return ret;
 }
 
+static
+enum tracker_type get_tracker_type(struct lttng_kernel_tracker_args *tracker)
+{
+       switch (tracker->type) {
+       case LTTNG_KERNEL_TRACKER_PID:
+               return TRACKER_PID;
+       case LTTNG_KERNEL_TRACKER_VPID:
+               return TRACKER_VPID;
+       case LTTNG_KERNEL_TRACKER_UID:
+               return TRACKER_UID;
+       case LTTNG_KERNEL_TRACKER_VUID:
+               return TRACKER_VUID;
+       case LTTNG_KERNEL_TRACKER_GID:
+               return TRACKER_GID;
+       case LTTNG_KERNEL_TRACKER_VGID:
+               return TRACKER_VGID;
+       default:
+               return TRACKER_UNKNOWN;
+       }
+}
+
 /**
  *     lttng_session_ioctl - lttng session fd ioctl
  *
@@ -480,9 +501,13 @@ fd_error:
  *     LTTNG_KERNEL_METADATA
  *             Returns a LTTng metadata file descriptor
  *     LTTNG_KERNEL_SESSION_TRACK_PID
- *             Add PID to session tracker
+ *             Add PID to session PID tracker
  *     LTTNG_KERNEL_SESSION_UNTRACK_PID
- *             Remove PID from session tracker
+ *             Remove PID from session PID tracker
+ *     LTTNG_KERNEL_SESSION_TRACK_ID
+ *             Add ID to tracker
+ *     LTTNG_KERNEL_SESSION_UNTRACK_ID
+ *             Remove ID from tracker
  *
  * The returned channel will be deleted when its file descriptor is closed.
  */
@@ -563,11 +588,54 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                METADATA_CHANNEL);
        }
        case LTTNG_KERNEL_SESSION_TRACK_PID:
-               return lttng_session_track_pid(session, (int) arg);
+               return lttng_session_track_id(session, TRACKER_PID, (int) arg);
        case LTTNG_KERNEL_SESSION_UNTRACK_PID:
-               return lttng_session_untrack_pid(session, (int) arg);
+               return lttng_session_untrack_id(session, TRACKER_PID, (int) arg);
+       case LTTNG_KERNEL_SESSION_TRACK_ID:
+       {
+               struct lttng_kernel_tracker_args tracker;
+               enum tracker_type tracker_type;
+
+               if (copy_from_user(&tracker,
+                               (struct lttng_kernel_tracker_args __user *) arg,
+                               sizeof(struct lttng_kernel_tracker_args)))
+                       return -EFAULT;
+               tracker_type = get_tracker_type(&tracker);
+               if (tracker_type == TRACKER_UNKNOWN)
+                       return -EINVAL;
+               return lttng_session_track_id(session, tracker_type, tracker.id);
+       }
+       case LTTNG_KERNEL_SESSION_UNTRACK_ID:
+       {
+               struct lttng_kernel_tracker_args tracker;
+               enum tracker_type tracker_type;
+
+               if (copy_from_user(&tracker,
+                               (struct lttng_kernel_tracker_args __user *) arg,
+                               sizeof(struct lttng_kernel_tracker_args)))
+                       return -EFAULT;
+               tracker_type = get_tracker_type(&tracker);
+               if (tracker_type == TRACKER_UNKNOWN)
+                       return -EINVAL;
+               return lttng_session_untrack_id(session, tracker_type,
+                               tracker.id);
+       }
        case LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS:
-               return lttng_session_list_tracker_pids(session);
+               return lttng_session_list_tracker_ids(session, TRACKER_PID);
+       case LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS:
+       {
+               struct lttng_kernel_tracker_args tracker;
+               enum tracker_type tracker_type;
+
+               if (copy_from_user(&tracker,
+                               (struct lttng_kernel_tracker_args __user *) arg,
+                               sizeof(struct lttng_kernel_tracker_args)))
+                       return -EFAULT;
+               tracker_type = get_tracker_type(&tracker);
+               if (tracker_type == TRACKER_UNKNOWN)
+                       return -EINVAL;
+               return lttng_session_list_tracker_ids(session, tracker_type);
+       }
        case LTTNG_KERNEL_SESSION_METADATA_REGEN:
                return lttng_session_metadata_regenerate(session);
        case LTTNG_KERNEL_SESSION_STATEDUMP: