diff options
| -rw-r--r-- | pcap-usb-linux.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/pcap-usb-linux.c b/pcap-usb-linux.c index bdabf005..63eb11eb 100644 --- a/pcap-usb-linux.c +++ b/pcap-usb-linux.c @@ -917,7 +917,11 @@ usb_read_linux_mmap(pcap_t *handle, int max_packets, pcap_handler callback, u_ch } /* flush pending events*/ - ioctl(handle->fd, MON_IOCH_MFLUSH, nflush); + if (ioctl(handle->fd, MON_IOCH_MFLUSH, nflush) == -1) { + snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, + "Can't mflush fd %d: %s", handle->fd, strerror(errno)); + return -1; + } return packets; } |