From e868cfb0a6c2b942029b95c85168f7da116d5c06 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Thu, 16 May 2019 13:46:03 +0200 Subject: utmpdump: check ftello() return value Signed-off-by: Karel Zak --- login-utils/utmpdump.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/login-utils/utmpdump.c b/login-utils/utmpdump.c index f1a3607dc..defa230b9 100644 --- a/login-utils/utmpdump.c +++ b/login-utils/utmpdump.c @@ -169,6 +169,9 @@ static int follow_by_inotify(FILE *in, const char *filename, FILE *out) size = ftello(in); fclose(in); + if (size < 0) + err(EXIT_FAILURE, _("%s: cannot get file position"), filename); + wd = inotify_add_watch(fd, filename, EVENTS); if (wd == -1) err(EXIT_FAILURE, _("%s: cannot add inotify watch."), filename); -- cgit v1.2.3-55-g7522