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tracing/filters: Fix MATCH_END_ONLY filter matching

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For '*foo' pattern, we should allow any string ending with
'foo', but event filtering incorrectly disallows strings
like bar_foo_foo:

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B4E8735.6070604@cn.fujitsu.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Li Zefan 2010-01-14 10:53:41 +08:00 committed by Steven Rostedt
parent 285caad415
commit a3291c14ec
1 changed files with 3 additions and 2 deletions
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5
kernel/trace/trace_events_filter.c
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@ -275,9 +275,10 @@ static int regex_match_middle(char *str, struct regex *r, int len)
static int regex_match_end(char *str, struct regex *r, int len)
{
char *ptr = strstr(str, r->pattern);
int strlen = len - 1;
if (ptr && (ptr[r->len] == 0))
if (strlen >= r->len &&
memcmp(str + strlen - r->len, r->pattern, r->len) == 0)
return 1;
return 0;
}