diff options
| author | Florian Westphal <fw@strlen.de> | 2025-09-15 14:40:30 +0200 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2025-09-15 20:17:42 +0200 |
| commit | 54dea548d796653534645c6e3c8577eaf7d77411 (patch) | |
| tree | 50f662e9399bf3472382fb3a2a058bba5ad06966 | |
| parent | 03da98bcd284d55212bc79e91dfb63da0ef7b937 (diff) | |
This example no longer works on more recent kernels:
genl-family-get
error: Invalid argument
dmesg says:
netlink: 'genl-family-get': attribute type 1 has an invalid length.
Fix this and also zero out the reserved field in the genl header,
while not validated yet for dumps this could change.
Reported-by: Divyanshu Rathore <Divyanshu.Rathore@bmwtechworks.in>
Signed-off-by: Florian Westphal <fw@strlen.de>
| -rw-r--r-- | examples/genl/genl-family-get.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/examples/genl/genl-family-get.c b/examples/genl/genl-family-get.c index ba8de12..0c20067 100644 --- a/examples/genl/genl-family-get.c +++ b/examples/genl/genl-family-get.c @@ -199,8 +199,9 @@ int main(int argc, char *argv[]) genl = mnl_nlmsg_put_extra_header(nlh, sizeof(struct genlmsghdr)); genl->cmd = CTRL_CMD_GETFAMILY; genl->version = 1; + genl->reserved = 0; - mnl_attr_put_u32(nlh, CTRL_ATTR_FAMILY_ID, GENL_ID_CTRL); + mnl_attr_put_u16(nlh, CTRL_ATTR_FAMILY_ID, GENL_ID_CTRL); if (argc >= 2) mnl_attr_put_strz(nlh, CTRL_ATTR_FAMILY_NAME, argv[1]); else |