The usage text already specified [family] as optional, now implement it :-)
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxx>
---
examples/genl/genl-family-get.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/examples/genl/genl-family-get.c b/examples/genl/genl-family-get.c
index 1ad1a04..b16f7b6 100644
--- a/examples/genl/genl-family-get.c
+++ b/examples/genl/genl-family-get.c
@@ -178,6 +178,7 @@ static int data_cb(const struct nlmsghdr *nlh, void *data)
printf("grps:\n");
parse_genl_mc_grps(tb[CTRL_ATTR_MCAST_GROUPS]);
}
+ printf("\n");
return MNL_CB_OK;
}
@@ -190,7 +191,7 @@ int main(int argc, char *argv[])
int ret;
unsigned int seq, portid;
- if (argc != 2) {
+ if (argc > 2) {
printf("%s [family name]\n", argv[0]);
exit(EXIT_FAILURE);
}
@@ -205,7 +206,10 @@ int main(int argc, char *argv[])
genl->version = 1;
mnl_attr_put_u32(nlh, CTRL_ATTR_FAMILY_ID, GENL_ID_CTRL);
- mnl_attr_put_strz(nlh, CTRL_ATTR_FAMILY_NAME, argv[1]);
+ if (argc >= 2)
+ mnl_attr_put_strz(nlh, CTRL_ATTR_FAMILY_NAME, argv[1]);
+ else
+ nlh->nlmsg_flags |= NLM_F_DUMP;
nl = mnl_socket_open(NETLINK_GENERIC);
if (nl == NULL) {
--
1.7.1
--
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