inotify silly example

#include <stdio.h>
#include <stdlib.h>
#include <linux/inotify.h>
#include <errno.h>
#include <sys/types.h>

#define NEVENTS 1
#define NAMEMAX 200
#define EVENT_BUF_LEN (sizeof(struct inotify_event) + NAMEMAX + 1)
#define EVENTS_BUF_LEN  (EVENT_BUF_LEN * NEVENTS)

int main (int argc, char** argv) {
    int notify_fd, watch_fd, bytes = 0;
    int events_n = 1;
    struct inotify_event *buff;

    notify_fd = inotify_init();
    if (notify_fd < 0) {
    perror("inotify_init() :: ");
    return 1;
    }

    watch_fd = inotify_add_watch(notify_fd, "/dev", IN_CREATE | IN_DELETE);
    if (watch_fd < 0) {
    perror("watch_fd() :: ");
    close(notify_fd);
    return 2;
    }

    for (;;) {
    buff = malloc(EVENT_BUF_LEN);
    if (!buff) {
        printf("Memory error!");
        close(notify_fd);
        return 3;
    }
    bytes = read(notify_fd, buff, EVENTS_BUF_LEN);
    if (bytes < EVENT_BUF_LEN - NAMEMAX + 1) {
        printf("No enought data");
        free(buff);
        close(notify_fd);
        return 4;
    }
    if (!buff->len) {
        printf("Unexpected error, len of event name undefined");
        free(buff);
        continue;

    }
    printf("Device: %s\n", buff->name);
    free(buff);
    }

    return 0;
}