Commit 84988450 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Ingo Molnar

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: default avatarMasami 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: default avatarIngo Molnar <mingo@elte.hu>
parent e1d2017b
......@@ -47,6 +47,9 @@
#define semantic_error(msg ...) die("Semantic error :" msg)
/* If there is no space to write, returns -E2BIG. */
static int e_snprintf(char *str, size_t size, const char *format, ...)
__attribute__((format(printf, 3, 4)));
static int e_snprintf(char *str, size_t size, const char *format, ...)
{
int ret;
......@@ -258,7 +261,7 @@ int synthesize_perf_probe_event(struct probe_point *pp)
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function,
offs, pp->retprobe ? "%return" : "", line);
else
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->file, line);
ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line);
if (ret <= 0)
goto error;
len = ret;
......
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