Fix bug with "--watchfd" not reporting file positions (#118).

docs/NEWS.md

@@ -1,6 +1,8 @@
 ### UNRELEASED
 
+ * *fix:* correct failure to report file positions in **--watchfd** ([#118](https://codeberg.org/a-j-wood/pv/issues/118))
  * *i18n:* Russian translations added
+ * *cleanup:* test added for **--watchfd PID:FD**
 
 ### 1.9.0 - 15 October 2024
 

src/pv/loop.c

@@ -649,6 +649,7 @@ int pv_watchfd_loop(pvstate_t state)
 				state->display.initial_offset = position_now;
 				first_check = false;
 			}
+			state->transfer.transferred = position_now;
 			state->transfer.total_written = position_now;
 		}
 
@@ -955,6 +956,7 @@ int pv_watchpid_loop(pvstate_t state)
 			}
 
 			if (NULL != info_array[idx].state) {
+				info_array[idx].state->transfer.transferred = position_now;
 				info_array[idx].state->transfer.total_written = position_now;
 				pv_display(info_array[idx].state, false);
 				displayed_lines++;

src/pv/watchpid.c

@@ -281,6 +281,13 @@ off_t pv_watchfd_position(pvwatchfd_t info)
 	(void) fclose(fptr);
 #endif
 
+	/*
+	 * This debugging line can be quite noisy - turned off for now,
+	 * uncomment if needed.
+	 *
+	 * debug("pid:%d fd:%d position:%lld", (int) (info->watch_pid), info->watch_fd, position);
+	 */
+
 	return position;
 }