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| author | Andreas Gruenbacher <agruen@linbit.com> | 2011-06-09 19:52:12 +0400 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 19:57:45 +0400 |
| commit | 7c3063cc6f0e75cdf312f5f318f9a4c02e460397 (patch) | |
| tree | ed54e6066aed1994577e20fc6d635d856627cbab /include/linux/genl_magic_func.h | |
| parent | 789c1b626cb490acb36cf481b45040b324f60fde (diff) | |
| download | linux-7c3063cc6f0e75cdf312f5f318f9a4c02e460397.tar.xz | |
drbd: Also need to check for DRBD_GENLA_F_MANDATORY flags before nla_find_nested()
This is done by introducing drbd_nla_find_nested() which handles the flag
before calling nla_find_nested().
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/genl_magic_func.h')
| -rw-r--r-- | include/linux/genl_magic_func.h | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h index 357f2ad403b1..0b8a88e2e83e 100644 --- a/include/linux/genl_magic_func.h +++ b/include/linux/genl_magic_func.h @@ -142,43 +142,6 @@ static struct nlattr *nested_attr_tb[128]; #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) #endif -static inline 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; -} - -static inline 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; -} - #undef GENL_struct #define GENL_struct(tag_name, tag_number, s_name, s_fields) \ /* *_from_attrs functions are static, but potentially unused */ \ |