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authorMasami Hiramatsu <mhiramat@redhat.com>2009-12-07 12:00:53 -0500
committerIngo Molnar <mingo@elte.hu>2009-12-07 12:33:21 -0500
commit849884508ecbe2d220131840e4cc7c32ca24ebe3 (patch)
treede705b4ffa5adbf329f232d2a2d1fcbde73de0aa /tools
parente1d2017b24fb31602f1128e6a8b2afc54c9283cd (diff)
perf probe: Check e_snprintf() format string
Check e_snprintf() format string by gcc, and fix a bug of e_snprintf() caller. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091207170053.19230.7690.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/probe-event.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index de0d91385c91..88e180449933 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -48,6 +48,9 @@
48 48
49/* If there is no space to write, returns -E2BIG. */ 49/* If there is no space to write, returns -E2BIG. */
50static int e_snprintf(char *str, size_t size, const char *format, ...) 50static int e_snprintf(char *str, size_t size, const char *format, ...)
51 __attribute__((format(printf, 3, 4)));
52
53static int e_snprintf(char *str, size_t size, const char *format, ...)
51{ 54{
52 int ret; 55 int ret;
53 va_list ap; 56 va_list ap;
@@ -258,7 +261,7 @@ int synthesize_perf_probe_event(struct probe_point *pp)
258 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function, 261 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function,
259 offs, pp->retprobe ? "%return" : "", line); 262 offs, pp->retprobe ? "%return" : "", line);
260 else 263 else
261 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->file, line); 264 ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line);
262 if (ret <= 0) 265 if (ret <= 0)
263 goto error; 266 goto error;
264 len = ret; 267 len = ret;