From: Jay Kamat jgkamat@fb.com
Fix a couple issues with cg_read_strcmp(), to improve correctness of cgroup tests - Fix cg_read_strcmp() always returning 0 for empty "needle" strings - Fix a memory leak in cg_read_strcmp()
Fixes: 84092dbcf901 ("selftests: cgroup: add memory controller self-tests")
Signed-off-by: Jay Kamat jgkamat@fb.com --- tools/testing/selftests/cgroup/cgroup_util.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c index 1e9e3c470561..4aadf38bcd5d 100644 --- a/tools/testing/selftests/cgroup/cgroup_util.c +++ b/tools/testing/selftests/cgroup/cgroup_util.c @@ -91,15 +91,24 @@ int cg_read_strcmp(const char *cgroup, const char *control, { size_t size = strlen(expected) + 1; char *buf; + int ret; + + /* Handle the case of comparing against empty string */ + if (size == 1) + size = 32;
buf = malloc(size); if (!buf) return -1;
- if (cg_read(cgroup, control, buf, size)) + if (cg_read(cgroup, control, buf, size)) { + free(buf); return -1; + }
- return strcmp(expected, buf); + ret = strcmp(expected, buf); + free(buf); + return ret; }
int cg_read_strstr(const char *cgroup, const char *control, const char *needle)