When following a file with follow-freq(), and it is not a regular file, but something for which stat(2) always returns 0 size (such as the /dev/klog character device on FreeBSD), log_reader_io_follow_file() never went into the process input branch, because the current position (0) was always at EOF (also 0). To break out of this unfortunate situation, if the file to read from is not a regular file, go into the process input loop anyway: at worst, it will do an expensive noop. Signed-off-by: Gergely Nagy <algernon@balabit.hu> --- lib/logreader.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/logreader.c b/lib/logreader.c index eb52330..1e2ea5e 100644 --- a/lib/logreader.c +++ b/lib/logreader.c @@ -276,7 +276,7 @@ log_reader_io_follow_file(gpointer s) evt_tag_int("size", st.st_size), NULL); - if (pos < st.st_size) + if (pos < st.st_size || !S_ISREG(st.st_mode)) { /* we have data to read */ log_reader_io_process_input(s); -- 1.7.10.4