1 /************************************************************************* 2     > File Name: inotify.c 3     > 监测一个目录下的文件变化，增加或删除提示 4     > Created Time: Thu 21 Sep 2017 02:41:48 PM CST 5  ************************************************************************/ 6  7 #include 
      
        8 #include 
       
         9 #include 
        
         10 #include 
         
          11 #include 
          
           12 13 int read_process_inotify_fd(int inotify_fd)14 {15     int res;16     char event_buf[512];17     int event_size;18     int event_pos = 0;19     struct inotify_event *event;20     res = read(inotify_fd, event_buf, sizeof(event_buf));21     if(res < sizeof(struct inotify_event))22     {23         if(errno == EINTR)24         {25             return 0;26         }27         printf("can not get event ,%s\n",strerror(errno));28         return -1;29     }30 31     while(res >= (int)sizeof(*event)) {32         event = (struct inotify_event *)(event_buf + event_pos); //指向下一个结构体33         if(event->len) {34             if(event->mask & IN_CREATE) {35                 printf("Add device '%s' due to inotify event\n", event->name);36             } else {37                 printf("Removing device '%s' due to inotify event\n", event->name);38             }39         }40         event_size = sizeof(*event) + event->len;41         res -= event_size;42         event_pos += event_size; //跳转到下一个结构体 43     }44     return 0;45 }46 47 int main(int argc ,char **argv)48 {49     int fd;50     if(argc < 2)51     {52         printf("Usage: %s 
           
            \n",argv[0]);53 return -1;54 }55 // inotify_init56 fd = inotify_init();57 // add watch58 //添加监控：argv[1]监控目录，IN_DELETE|IN_CREATE 监控 创建和删除59 inotify_add_watch(fd, argv[1], IN_DELETE|IN_CREATE); 60 // read61 while(1)62 {63 read_process_inotify_fd(fd);64 }65 return 0;66 }