diff options
Diffstat (limited to 'src/msg.c')
| -rw-r--r-- | src/msg.c | 22 |
1 files changed, 18 insertions, 4 deletions
@@ -184,13 +184,27 @@ void *mnl_nlmsg_get_tail(const struct nlmsghdr *nlh) * @seq: last sequence number used to send a message * * This functions returns 1 if the sequence tracking is fulfilled, otherwise - * 0 is returned. If seq is 0, then the sequence tracking is skipped. This - * value is generally used by the kernel for asynchronous notifications, - * for that reason, this library consider that it is reserved. + * 0 is returned. We skip the tracking for netlink messages whose sequence + * number is zero since it is usually reserved for event-based kernel + * notifications. */ int mnl_nlmsg_seq_ok(const struct nlmsghdr *nlh, unsigned int seq) { - return seq ? nlh->nlmsg_seq == seq : 1; + return nlh->nlmsg_seq ? nlh->nlmsg_seq == seq : 1; +} + +/** + * mnl_nlmsg_portid_ok - perform portID origin check + * @nlh: current netlink message that we are handling + * @seq: netlink portid that we want to check + * + * This functions return 1 if the origin is fulfilled, otherwise + * 0 is returned. We skip the tracking for netlink message whose portID + * is zero since it is reserved for event-based kernel notifications. + */ +int mnl_nlmsg_portid_ok(const struct nlmsghdr *nlh, unsigned int portid) +{ + return nlh->nlmsg_pid ? nlh->nlmsg_pid == portid : 1; } /* XXX: rework this, please */ |