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authorPaul Moore <paul.moore@hp.com>2006-09-25 15:56:37 -0700
committerDavid S. Miller <davem@davemloft.net>2006-09-25 15:56:37 -0700
commitfd3858554b62c3af6b7664b5c58ad864c87116c9 (patch)
tree9b01a61ed88a19331565649f04373a08ca3d3aa6 /net/netlabel/netlabel_unlabeled.c
parentfcd48280643e92ec6cb29a04e9079dd7b6b5bfef (diff)
[NetLabel]: rework the Netlink attribute handling (part 2)
At the suggestion of Thomas Graf, rewrite NetLabel's use of Netlink attributes to better follow the common Netlink attribute usage. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlabel/netlabel_unlabeled.c')
-rw-r--r--net/netlabel/netlabel_unlabeled.c79
1 files changed, 35 insertions, 44 deletions
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index 785f4960e0d..440f5c4e1e2 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -55,9 +55,13 @@ static struct genl_family netlbl_unlabel_gnl_family = {
.hdrsize = 0,
.name = NETLBL_NLTYPE_UNLABELED_NAME,
.version = NETLBL_PROTO_VERSION,
- .maxattr = 0,
+ .maxattr = NLBL_UNLABEL_A_MAX,
};
+/* NetLabel Netlink attribute policy */
+static struct nla_policy netlbl_unlabel_genl_policy[NLBL_UNLABEL_A_MAX + 1] = {
+ [NLBL_UNLABEL_A_ACPTFLG] = { .type = NLA_U8 },
+};
/*
* NetLabel Command Handlers
@@ -75,31 +79,18 @@ static struct genl_family netlbl_unlabel_gnl_family = {
*/
static int netlbl_unlabel_accept(struct sk_buff *skb, struct genl_info *info)
{
- int ret_val;
- struct nlattr *data = netlbl_netlink_payload_data(skb);
- u32 value;
-
- ret_val = netlbl_netlink_cap_check(skb, CAP_NET_ADMIN);
- if (ret_val != 0)
- return ret_val;
+ int ret_val = -EINVAL;
+ u8 value;
- if (netlbl_netlink_payload_len(skb) == NETLBL_LEN_U32) {
- value = nla_get_u32(data);
+ if (info->attrs[NLBL_UNLABEL_A_ACPTFLG]) {
+ value = nla_get_u8(info->attrs[NLBL_UNLABEL_A_ACPTFLG]);
if (value == 1 || value == 0) {
atomic_set(&netlabel_unlabel_accept_flg, value);
- netlbl_netlink_send_ack(info,
- netlbl_unlabel_gnl_family.id,
- NLBL_UNLABEL_C_ACK,
- NETLBL_E_OK);
- return 0;
+ ret_val = 0;
}
}
- netlbl_netlink_send_ack(info,
- netlbl_unlabel_gnl_family.id,
- NLBL_UNLABEL_C_ACK,
- EINVAL);
- return -EINVAL;
+ return ret_val;
}
/**
@@ -114,39 +105,39 @@ static int netlbl_unlabel_accept(struct sk_buff *skb, struct genl_info *info)
*/
static int netlbl_unlabel_list(struct sk_buff *skb, struct genl_info *info)
{
- int ret_val = -ENOMEM;
+ int ret_val = -EINVAL;
struct sk_buff *ans_skb;
+ void *data;
- ans_skb = netlbl_netlink_alloc_skb(0,
- GENL_HDRLEN + NETLBL_LEN_U32,
- GFP_KERNEL);
+ ans_skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (ans_skb == NULL)
goto list_failure;
-
- if (netlbl_netlink_hdr_put(ans_skb,
- info->snd_pid,
- 0,
- netlbl_unlabel_gnl_family.id,
- NLBL_UNLABEL_C_LIST) == NULL)
+ data = netlbl_netlink_hdr_put(ans_skb,
+ info->snd_pid,
+ info->snd_seq,
+ netlbl_unlabel_gnl_family.id,
+ 0,
+ NLBL_UNLABEL_C_LIST);
+ if (data == NULL) {
+ ret_val = -ENOMEM;
goto list_failure;
+ }
- ret_val = nla_put_u32(ans_skb,
- NLA_U32,
- atomic_read(&netlabel_unlabel_accept_flg));
+ ret_val = nla_put_u8(ans_skb,
+ NLBL_UNLABEL_A_ACPTFLG,
+ atomic_read(&netlabel_unlabel_accept_flg));
if (ret_val != 0)
goto list_failure;
- ret_val = netlbl_netlink_snd(ans_skb, info->snd_pid);
+ genlmsg_end(ans_skb, data);
+
+ ret_val = genlmsg_unicast(ans_skb, info->snd_pid);
if (ret_val != 0)
goto list_failure;
-
return 0;
list_failure:
- netlbl_netlink_send_ack(info,
- netlbl_unlabel_gnl_family.id,
- NLBL_UNLABEL_C_ACK,
- -ret_val);
+ kfree(ans_skb);
return ret_val;
}
@@ -157,7 +148,8 @@ list_failure:
static struct genl_ops netlbl_unlabel_genl_c_accept = {
.cmd = NLBL_UNLABEL_C_ACCEPT,
- .flags = 0,
+ .flags = GENL_ADMIN_PERM,
+ .policy = netlbl_unlabel_genl_policy,
.doit = netlbl_unlabel_accept,
.dumpit = NULL,
};
@@ -165,6 +157,7 @@ static struct genl_ops netlbl_unlabel_genl_c_accept = {
static struct genl_ops netlbl_unlabel_genl_c_list = {
.cmd = NLBL_UNLABEL_C_LIST,
.flags = 0,
+ .policy = netlbl_unlabel_genl_policy,
.doit = netlbl_unlabel_list,
.dumpit = NULL,
};
@@ -218,10 +211,8 @@ int netlbl_unlabel_genl_init(void)
*/
int netlbl_unlabel_getattr(struct netlbl_lsm_secattr *secattr)
{
- if (atomic_read(&netlabel_unlabel_accept_flg) == 1) {
- memset(secattr, 0, sizeof(*secattr));
- return 0;
- }
+ if (atomic_read(&netlabel_unlabel_accept_flg) == 1)
+ return netlbl_secattr_init(secattr);
return -ENOMSG;
}