diff options
| author |   Jakub Kicinski <kuba@kernel.org> | 2020-10-02 14:49:57 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-10-02 19:11:12 -0700 |
| commit | 48526a0f4ca2b484cab4318dc0b2c2be1d8685b7 (patch) | |
| tree | 4f3c795650dde693e5238ec4ffde5aa80c343d4f /net/netlink | |
| parent | genetlink: use .start callback for dumppolicy (diff) | |
| download | linux-dev-48526a0f4ca2b484cab4318dc0b2c2be1d8685b7.tar.xz linux-dev-48526a0f4ca2b484cab4318dc0b2c2be1d8685b7.zip | |
genetlink: bring back per op policy
Add policy to the struct genl_ops structure, this time
with maxattr, so it can be used properly.
Propagate .policy and .maxattr from the family
in genl_get_cmd() if needed, this way the rest of the
code does not have to worry if the policy is per op
or global.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 286a3b3f928e..c3673d84d8b5 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -116,6 +116,11 @@ static void genl_op_from_full(const struct genl_family *family, unsigned int i, struct genl_ops *op) { *op = family->ops[i]; + + if (!op->maxattr) + op->maxattr = family->maxattr; + if (!op->policy) + op->policy = family->policy; } static int genl_get_cmd_full(u8 cmd, const struct genl_family *family, @@ -142,6 +147,9 @@ static void genl_op_from_small(const struct genl_family *family, op->internal_flags = family->small_ops[i].internal_flags; op->flags = family->small_ops[i].flags; op->validate = family->small_ops[i].validate; + + op->maxattr = family->maxattr; + op->policy = family->policy; } static int genl_get_cmd_small(u8 cmd, const struct genl_family *family, @@ -529,16 +537,16 @@ genl_family_rcv_msg_attrs_parse(const struct genl_family *family, struct nlattr **attrbuf; int err; - if (!family->maxattr) + if (!ops->maxattr) return NULL; - attrbuf = kmalloc_array(family->maxattr + 1, + attrbuf = kmalloc_array(ops->maxattr + 1, sizeof(struct nlattr *), GFP_KERNEL); if (!attrbuf) return ERR_PTR(-ENOMEM); - err = __nlmsg_parse(nlh, hdrlen, attrbuf, family->maxattr, - family->policy, validate, extack); + err = __nlmsg_parse(nlh, hdrlen, attrbuf, ops->maxattr, ops->policy, + validate, extack); if (err) { kfree(attrbuf); return ERR_PTR(err); @@ -845,7 +853,7 @@ static int ctrl_fill_info(const struct genl_family *family, u32 portid, u32 seq, op_flags |= GENL_CMD_CAP_DUMP; if (op.doit) op_flags |= GENL_CMD_CAP_DO; - if (family->policy) + if (op.policy) op_flags |= GENL_CMD_CAP_HASPOL; nest = nla_nest_start_noflag(skb, i + 1); |