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wext: add checked wrappers for adding events/points to streams

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These checked wrappers are necessary for the next patch, which
will use them to avoid sending out partial scan results.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2015-02-25 10:54:33 +01:00
parent abfbc3af57
commit 36ef906ee8
1 changed files with 22 additions and 0 deletions
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22
include/net/iw_handler.h
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@ -519,6 +519,17 @@ iwe_stream_add_event(struct iw_request_info *info, char *stream, char *ends,
return stream; return stream;
} }
static inline char *
iwe_stream_add_event_check(struct iw_request_info *info, char *stream,
char *ends, struct iw_event *iwe, int event_len)
{
char *res = iwe_stream_add_event(info, stream, ends, iwe, event_len);
if (res == stream)
return ERR_PTR(-E2BIG);
return res;
}
/*------------------------------------------------------------------*/ /*------------------------------------------------------------------*/
/* /*
* Wrapper to add an short Wireless Event containing a pointer to a * Wrapper to add an short Wireless Event containing a pointer to a
@ -545,6 +556,17 @@ iwe_stream_add_point(struct iw_request_info *info, char *stream, char *ends,
return stream; return stream;
} }
static inline char *
iwe_stream_add_point_check(struct iw_request_info *info, char *stream,
char *ends, struct iw_event *iwe, char *extra)
{
char *res = iwe_stream_add_point(info, stream, ends, iwe, extra);
if (res == stream)
return ERR_PTR(-E2BIG);
return res;
}
/*------------------------------------------------------------------*/ /*------------------------------------------------------------------*/
/* /*
* Wrapper to add a value to a Wireless Event in a stream of events. * Wrapper to add a value to a Wireless Event in a stream of events.