read_text
if (read_text("/proc/self/mounts", buf, sizeof(buf)) <= 0)
read = read_text("/proc/mounts", buf, sizeof(buf));
read = read_text("/sys/kernel/cgroup/features", buf, sizeof(buf));
ret = read_text(path, buf, size);
ret = read_text(path, buf, len);
extern ssize_t read_text(const char *path, char *buf, size_t max_len);
if (read_text("/proc/swaps", buf, sizeof(buf)) <= 0)
if (read_text(path, buf, sizeof(buf)) <= 0)