/*
Simple example for inotify in Linux.

inotify has 3 main functions.
inotify_init1 to initialize
inotify_add_watch to add monitor
then inotify_??_watch to rm monitor.you the what to replace with ??.
yes third one is  inotify_rm_watch()
*/


#include <sys/inotify.h>
int main(){
int fd,wd,wd1,i=0,len=0;
char pathname[100],buf[1024];
struct inotify_event *event;

fd=inotify_init1(IN_NONBLOCK);
/* watch /test directory for any activity and report it back to me */
wd=inotify_add_watch(fd,"/test",IN_ALL_EVENTS);

while(1){
//read 1024  bytes of events from fd into buf
i=0;
len=read(fd,buf,1024);
while(i<len){
event=(struct inotify_event *) &buf[i];


/* check for changes */
if(event->mask & IN_OPEN)
printf("%s :was opened\n",event->name);

if(event->mask & IN_MODIFY)
printf("%s : modified\n",event->name);

if(event->mask & IN_ATTRIB)
printf("%s :meta data changed\n",event->name);

if(event->mask & IN_ACCESS)
printf("%s :was read\n",event->name);

if(event->mask & IN_CLOSE_WRITE)
printf("%s :file opened for writing was closed\n",event->name);

if(event->mask & IN_CLOSE_NOWRITE)
printf("%s :file opened not for writing was closed\n",event->name);

if(event->mask & IN_DELETE_SELF)
printf("%s :deleted\n",event->name);

if(event->mask & IN_DELETE)
printf("%s :deleted\n",event->name);

/* update index to start of next event */
i+=sizeof(struct inotify_event)+event->len;
}
}

}