libnetlink: check flag NLM_F_DUMP_INTR during dumps
When this flag is set, it means that dump was interrupted and result may be
inconsistent.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index f262959..04201cd 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -194,6 +194,7 @@
.msg_iovlen = 1,
};
char buf[16384];
+ int dump_intr = 0;
iov.iov_base = buf;
while (1) {
@@ -230,6 +231,9 @@
h->nlmsg_seq != rth->dump)
goto skip_it;
+ if (h->nlmsg_flags & NLM_F_DUMP_INTR)
+ dump_intr = 1;
+
if (h->nlmsg_type == NLMSG_DONE) {
found_done = 1;
break; /* process next filter */
@@ -254,8 +258,12 @@
}
}
- if (found_done)
+ if (found_done) {
+ if (dump_intr)
+ fprintf(stderr,
+ "Dump was interrupted and may be inconsistent.\n");
return 0;
+ }
if (msg.msg_flags & MSG_TRUNC) {
fprintf(stderr, "Message truncated\n");
