Messages in this thread | | | Date | Thu, 29 May 2014 10:37:32 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 13/14] perf tests: Add test for caching dso file descriptors |
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On Thu, May 29, 2014 at 09:06:05AM +0900, Namhyung Kim wrote: > On Tue, 27 May 2014 09:54:36 +0200, Jiri Olsa wrote: > > On Tue, May 27, 2014 at 10:36:44AM +0900, Namhyung Kim wrote: > >> On Thu, 15 May 2014 19:23:34 +0200, Jiri Olsa wrote: > >> > Adding test that setup test_dso_data__fd_limit and test > >> > dso data file descriptors are cached appropriately. > >> > >> [SNIP] > >> > +static long open_files_cnt(void) > >> > +{ > >> > + char path[PATH_MAX]; > >> > + struct dirent *dent; > >> > + DIR *dir; > >> > + long nr = 0; > >> > + int n; > >> > + > >> > + n = scnprintf(path, PATH_MAX, "%s/self/fd", procfs__mountpoint()); > >> > + TEST_ASSERT_VAL("couldn't get fd path", n < PATH_MAX); > >> > >> Looks like an unnecessary check since the scnprintf() cannot return more > >> than (or equal to) PATH_MAX. > > > > once it's equal it's bad.. as the man says: > > "return value of size or more means that the output was truncated" > > Did you see "sn"printf?
yes, I just double checked.. jirka
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