diff options
| author |   deraadt <deraadt@openbsd.org> | 2019-06-28 13:32:41 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 2019-06-28 13:32:41 +0000 |
| commit | df69c215c7c66baf660f3f65414fd34796c96152 (patch) | |
| tree | 0255639162b24c4a2f761a274e32b69c2256fd45 /usr.sbin/tcpdump/tcpdump.c | |
| parent | miniroot prototype disklabels should attempt to contain accurate (diff) | |
| download | wireguard-openbsd-df69c215c7c66baf660f3f65414fd34796c96152.tar.xz wireguard-openbsd-df69c215c7c66baf660f3f65414fd34796c96152.zip | |
When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.
Diffstat (limited to 'usr.sbin/tcpdump/tcpdump.c')
| -rw-r--r-- | usr.sbin/tcpdump/tcpdump.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/usr.sbin/tcpdump/tcpdump.c b/usr.sbin/tcpdump/tcpdump.c index fadb1162d61..7664d8c4b3c 100644 --- a/usr.sbin/tcpdump/tcpdump.c +++ b/usr.sbin/tcpdump/tcpdump.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcpdump.c,v 1.90 2019/05/26 22:42:42 dlg Exp $ */ +/* $OpenBSD: tcpdump.c,v 1.91 2019/06/28 13:32:51 deraadt Exp $ */ /* * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 @@ -188,7 +188,7 @@ pcap_list_linktypes(pcap_t *p) if (fd < 0) error("Invalid bpf descriptor"); - if (ioctl(fd, BIOCGDLTLIST, &dl) < 0) + if (ioctl(fd, BIOCGDLTLIST, &dl) == -1) err(1, "BIOCGDLTLIST"); if (dl.bfl_len > MAXDLT) |