diff -uprN a/bindings.c b/bindings.c
--- a/bindings.c	2019-01-07 16:36:42.290390594 +0800
+++ b/bindings.c	2019-01-07 16:46:59.507360500 +0800
@@ -2427,10 +2427,10 @@ int cg_read(const char *path, char *buf,
 	if (strcmp(f->file, "tasks") == 0 ||
 			strcmp(f->file, "/tasks") == 0 ||
 			strcmp(f->file, "/cgroup.procs") == 0 ||
-			strcmp(f->file, "cgroup.procs") == 0)
+			strcmp(f->file, "cgroup.procs") == 0) {
 		// special case - we have to translate the pids
 		r = do_read_pids(fc->pid, f->controller, f->cgroup, f->file, &data);
-	else {
+	} else {
 		data = cgfs_get_value(f->controller, f->cgroup, f->file);
 		r = !data;
 	}
@@ -3376,7 +3376,7 @@ static long get_cpulimit(const char *cgr
         char *cpulimit_str = NULL;
         long cpulimit = -1;
 
-        if (!cgfs_get_value("cpu", cgroup, file, &cpulimit_str))
+        if (!(cpulimit_str = cgfs_get_value("cpu", cgroup, file)))
 		return cpulimit;
 
         cpulimit = strtol(cpulimit_str, NULL, 10);
@@ -4552,8 +4552,9 @@ int proc_read(const char *path, char *bu
 {
 	struct file_info *f = (struct file_info *) fi->fh;
 
-	if (!f->buf)
+	if (!f->buf) {
 		return -EINVAL;
+	}
 
 	switch (f->type) {
 	case LXC_TYPE_PROC_MEMINFO: