On 15/12/2021 16:03, carsten.haitzler@foss.arm.com wrote:
From: Carsten Haitzler carsten.haitzler@arm.com
Perf test's shell runner will just run everything in the tests directory (as long as it's not another directory or does not begin with a dot), but sometimes you find files in there that are not shell scripts - perf.data output for example if you do some testing and then the next time you run perf test it tries to run these. Check the files are executable so they are actually intended to be test scripts and not just some "random junk" files there.
Signed-off-by: Carsten Haitzler carsten.haitzler@arm.com
tools/perf/tests/builtin-test.c | 4 +++- tools/perf/util/path.c | 12 ++++++++++++ tools/perf/util/path.h | 1 + 3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 8cb5a1c3489e..ece272b55587 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c @@ -295,7 +295,9 @@ static const char *shell_test__description(char *description, size_t size, #define for_each_shell_test(entlist, nr, base, ent) \ for (int __i = 0; __i < nr && (ent = entlist[__i]); __i++) \
if (!is_directory(base, ent) && ent->d_name[0] != '.')
if (!is_directory(base, ent) && \is_executable_file(base, ent) && \ent->d_name[0] != '.')
If we reorder the checks, we could potentially avoid a few syscalls for hidden items. i.e., if we do ent->d_name[0] != '.' first.
static const char *shell_tests__dir(char *path, size_t size) { diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c index caed0336429f..7dde8c230ae8 100644 --- a/tools/perf/util/path.c +++ b/tools/perf/util/path.c @@ -92,3 +92,15 @@ bool is_directory(const char *base_path, const struct dirent *dent) return S_ISDIR(st.st_mode); }
+bool is_executable_file(const char *base_path, const struct dirent *dent) +{
- char path[PATH_MAX];
- struct stat st;
- sprintf(path, "%s/%s", base_path, dent->d_name);
Should this be snprintf() for additional safety ?
- if (stat(path, &st))
return false;- return !S_ISDIR(st.st_mode) && (st.st_mode & S_IXUSR);
Otherwise looks good to me.
Suzuki