On 04/07/2017 11:26 AM, Johannes Berg wrote:
From: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/genetlink.h | 27 +++++++++++++++++++++++++++
net/netlink/genetlink.c | 6 ++++--
2 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index a34275be3600..67ad2326cfa6 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -84,6 +84,7 @@ struct nlattr **genl_family_attrbuf(const struct genl_family *family);
* @attrs: netlink attributes
* @_net: network namespace
* @user_ptr: user pointers
+ * @exterr: extended error report struct
*/
struct genl_info {
u32 snd_seq;
@@ -94,6 +95,7 @@ struct genl_info {
struct nlattr ** attrs;
possible_net_t _net;
void * user_ptr[2];
+ struct netlink_ext_err *exterr;
};
static inline struct net *genl_info_net(struct genl_info *info)
@@ -106,6 +108,31 @@ static inline void genl_info_net_set(struct genl_info *info, struct net *net)
write_pnet(&info->_net, net);
}
+static inline int genl_err_str(struct genl_info *info, int err,
+ const char *msg)
+{
+ info->exterr->msg = msg;
+
+ return err;
+}
I guess the error string must be constant and always available in memory
in this implementation?
I think it would be nice to dynamically create strings (malloc, snprintf, etc)
and have the err_str logic free it when done?
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
