diff options
Diffstat (limited to 'drivers/block/drbd/drbd_nl.c')
-rw-r--r-- | drivers/block/drbd/drbd_nl.c | 51 |
1 files changed, 1 insertions, 50 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 24187f1c93d5..45bb5cebb59d 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -75,6 +75,7 @@ int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info); int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb); #include <linux/drbd_genl_api.h> +#include "drbd_nla.h" #include <linux/genl_magic_func.h> /* used blkdev_get_by_path, to claim our meta data device(s) */ @@ -3219,53 +3220,3 @@ failed: "Event seq:%u sib_reason:%u\n", err, seq, sib->sib_reason); } - -int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla) -{ - struct nlattr *head = nla_data(nla); - int len = nla_len(nla); - int rem; - - /* - * validate_nla (called from nla_parse_nested) ignores attributes - * beyond maxtype, and does not understand the DRBD_GENLA_F_MANDATORY flag. - * In order to have it validate attributes with the DRBD_GENLA_F_MANDATORY - * flag set also, check and remove that flag before calling - * nla_parse_nested. - */ - - nla_for_each_attr(nla, head, len, rem) { - if (nla->nla_type & DRBD_GENLA_F_MANDATORY) { - nla->nla_type &= ~DRBD_GENLA_F_MANDATORY; - if (nla_type(nla) > maxtype) - return -EOPNOTSUPP; - } - } - return 0; -} - -int drbd_nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla, - const struct nla_policy *policy) -{ - int err; - - err = drbd_nla_check_mandatory(maxtype, nla); - if (!err) - err = nla_parse_nested(tb, maxtype, nla, policy); - - return err; -} - -struct nlattr *drbd_nla_find_nested(int maxtype, struct nlattr *nla, int attrtype) -{ - int err; - /* - * If any nested attribute has the DRBD_GENLA_F_MANDATORY flag set and - * we don't know about that attribute, reject all the nested - * attributes. - */ - err = drbd_nla_check_mandatory(maxtype, nla); - if (err) - return ERR_PTR(err); - return nla_find_nested(nla, attrtype); -} |