perf machine: Use snprintf instead of sprintf

To avoid buffer overruns.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1379845338-29637-2-git-send-email-adrian.hunter@intel.com
[ Split from aa7fe3b ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 6188d28..ddf917b 100644 (file)
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -785,10 +785,10 @@ static int machine__create_modules(struct machine *machine)
        const char *modules;
        char path[PATH_MAX];
 
-       if (machine__is_default_guest(machine))
+       if (machine__is_default_guest(machine)) {
                modules = symbol_conf.default_guest_modules;
-       else {
-               sprintf(path, "%s/proc/modules", machine->root_dir);
+       } else {
+               snprintf(path, PATH_MAX, "%s/proc/modules", machine->root_dir);
                modules = path;
        }