diff options
Diffstat (limited to 'net/netlink/genetlink.c')
-rw-r--r-- | net/netlink/genetlink.c | 56 |
1 files changed, 20 insertions, 36 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 95391e609046..1b897bc92e61 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c | |||
@@ -295,60 +295,49 @@ int genl_unregister_family(struct genl_family *family) | |||
295 | return -ENOENT; | 295 | return -ENOENT; |
296 | } | 296 | } |
297 | 297 | ||
298 | static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, | 298 | static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
299 | int *errp) | ||
300 | { | 299 | { |
301 | struct genl_ops *ops; | 300 | struct genl_ops *ops; |
302 | struct genl_family *family; | 301 | struct genl_family *family; |
303 | struct genl_info info; | 302 | struct genl_info info; |
304 | struct genlmsghdr *hdr = nlmsg_data(nlh); | 303 | struct genlmsghdr *hdr = nlmsg_data(nlh); |
305 | int hdrlen, err = -EINVAL; | 304 | int hdrlen, err; |
306 | 305 | ||
307 | family = genl_family_find_byid(nlh->nlmsg_type); | 306 | family = genl_family_find_byid(nlh->nlmsg_type); |
308 | if (family == NULL) { | 307 | if (family == NULL) |
309 | err = -ENOENT; | 308 | return -ENOENT; |
310 | goto errout; | ||
311 | } | ||
312 | 309 | ||
313 | hdrlen = GENL_HDRLEN + family->hdrsize; | 310 | hdrlen = GENL_HDRLEN + family->hdrsize; |
314 | if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) | 311 | if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) |
315 | goto errout; | 312 | return -EINVAL; |
316 | 313 | ||
317 | ops = genl_get_cmd(hdr->cmd, family); | 314 | ops = genl_get_cmd(hdr->cmd, family); |
318 | if (ops == NULL) { | 315 | if (ops == NULL) |
319 | err = -EOPNOTSUPP; | 316 | return -EOPNOTSUPP; |
320 | goto errout; | ||
321 | } | ||
322 | 317 | ||
323 | if ((ops->flags & GENL_ADMIN_PERM) && security_netlink_recv(skb, CAP_NET_ADMIN)) { | 318 | if ((ops->flags & GENL_ADMIN_PERM) && |
324 | err = -EPERM; | 319 | security_netlink_recv(skb, CAP_NET_ADMIN)) |
325 | goto errout; | 320 | return -EPERM; |
326 | } | ||
327 | 321 | ||
328 | if (nlh->nlmsg_flags & NLM_F_DUMP) { | 322 | if (nlh->nlmsg_flags & NLM_F_DUMP) { |
329 | if (ops->dumpit == NULL) { | 323 | if (ops->dumpit == NULL) |
330 | err = -EOPNOTSUPP; | 324 | return -EOPNOTSUPP; |
331 | goto errout; | ||
332 | } | ||
333 | 325 | ||
334 | *errp = err = netlink_dump_start(genl_sock, skb, nlh, | 326 | err = netlink_dump_start(genl_sock, skb, nlh, |
335 | ops->dumpit, ops->done); | 327 | ops->dumpit, ops->done); |
336 | if (err == 0) | 328 | if (err == 0) |
337 | skb_pull(skb, min(NLMSG_ALIGN(nlh->nlmsg_len), | 329 | err = -EINTR; |
338 | skb->len)); | 330 | return err; |
339 | return -1; | ||
340 | } | 331 | } |
341 | 332 | ||
342 | if (ops->doit == NULL) { | 333 | if (ops->doit == NULL) |
343 | err = -EOPNOTSUPP; | 334 | return -EOPNOTSUPP; |
344 | goto errout; | ||
345 | } | ||
346 | 335 | ||
347 | if (family->attrbuf) { | 336 | if (family->attrbuf) { |
348 | err = nlmsg_parse(nlh, hdrlen, family->attrbuf, family->maxattr, | 337 | err = nlmsg_parse(nlh, hdrlen, family->attrbuf, family->maxattr, |
349 | ops->policy); | 338 | ops->policy); |
350 | if (err < 0) | 339 | if (err < 0) |
351 | goto errout; | 340 | return err; |
352 | } | 341 | } |
353 | 342 | ||
354 | info.snd_seq = nlh->nlmsg_seq; | 343 | info.snd_seq = nlh->nlmsg_seq; |
@@ -358,12 +347,7 @@ static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, | |||
358 | info.userhdr = nlmsg_data(nlh) + GENL_HDRLEN; | 347 | info.userhdr = nlmsg_data(nlh) + GENL_HDRLEN; |
359 | info.attrs = family->attrbuf; | 348 | info.attrs = family->attrbuf; |
360 | 349 | ||
361 | *errp = err = ops->doit(skb, &info); | 350 | return ops->doit(skb, &info); |
362 | return err; | ||
363 | |||
364 | errout: | ||
365 | *errp = err; | ||
366 | return -1; | ||
367 | } | 351 | } |
368 | 352 | ||
369 | static void genl_rcv(struct sock *sk, int len) | 353 | static void genl_rcv(struct sock *sk, int len) |