Commit-ID: b7702a2136b5f8e0e186e22cae91aaecf98b418c
Gitweb: http://git.kernel.org/tip/b7702a2136b5f8e0e186e22cae91aaecf98b418c
Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Wed, 16 Dec 2009 17:24:15 -0500
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Thu, 17 Dec 2009 09:42:44 +0100
perf probe: Check new event name
Check new event name is same syntax as a C symbol in perf command.
In other words, checking the name is as like as other tracepoint
events.
This can prevent user to create an event with useless name (e.g.
foo|bar, foo*bar).
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Jim Keniston <jkenisto@xxxxxxxxxx>
Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Jason Baron <jbaron@xxxxxxxxxx>
Cc: K.Prasad <prasad@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: systemtap <systemtap@xxxxxxxxxxxxxxxxxx>
Cc: DLE <dle-develop@xxxxxxxxxxxxxxxxxxxxx>
LKML-Reference: <20091216222415.14459.71383.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
[ v2: minor cleanups ]
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
tools/perf/util/probe-event.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 2ca6215..29465d4 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -62,6 +62,18 @@ static int e_snprintf(char *str, size_t size, const char *format, ...)
return ret;
}
+/* Check the name is good for event/group */
+static bool check_event_name(const char *name)
+{
+ if (!isalpha(*name) && *name != '_')
+ return false;
+ while (*++name != '\0') {
+ if (!isalpha(*name) && !isdigit(*name) && *name != '_')
+ return false;
+ }
+ return true;
+}
+
/* Parse probepoint definition. */
static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp)
{
@@ -82,6 +94,9 @@ static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp)
ptr = strchr(arg, ':');
if (ptr) /* Group name is not supported yet. */
semantic_error("Group name is not supported yet.");
+ if (!check_event_name(arg))
+ semantic_error("%s is bad for event name -it must "
+ "follow C symbol-naming rule.", arg);
pp->event = strdup(arg);
arg = tmp;
}
--
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