监控多个文件目录 - Chinaunix

#include <stdio.h>
#include <unistd.h>
#include <sys/select.h>
#include <errno.h>
#include <sys/inotify.h>
typedef struct wd_name {
int wd;
char * name;
}WD;
#define MONITOR_NUM 3
char* files[MONITOR_NUM] = {
"./a",
"./b",
"./c"
};
WD wd_array[MONITOR_NUM];
static void inotify_event_handler(struct inotify_event *event)
{
int i = 0;
if (event->mask & IN_ISDIR)
printf("Object type: %s\n", "Direcotory");
else
printf("Object type: %s\n", "file");
for (i=0; i<MONITOR_NUM; i++)
{
if (event->wd != wd_array[i].wd)
continue;
printf("Object name: %s\n", wd_array[i].name);
break;
}
if ( event->mask & IN_CREATE )
{
if ( event->mask & IN_ISDIR )
printf( "The directory %s was created.\n", event->name );
else
printf( "The file %s was created.\n", event->name );
}
else if ( event->mask & IN_DELETE )
{
if ( event->mask & IN_ISDIR )
printf( "The directory %s was deleted.\n", event->name );
else
printf( "The file %s was deleted.\n", event->name );
}
else if ( event->mask & IN_MODIFY )
{
if ( event->mask & IN_ISDIR )
printf( "The directory %s was modified.\n", event->name );
else
printf( "The file %s was modified.\n", event->name );
}
}
int main(int argc, char **argv)
{
int fd = 0;
int wd = 0;
int i = 0;
int len = 0;
int index = 0;
unsigned char buf[1024] = {0};
struct inotify_event *event = {0};
fd = inotify_init();
if (fd < 0) {
printf("Fail to initialize inotify.\n");
return -1;
}
for (i=0; i<MONITOR_NUM; i++) {
wd_array[i].name = files[i];
wd = inotify_add_watch(fd, wd_array[i].name, IN_CREATE | IN_MODIFY | IN_DELETE);
if (wd < 0) {
printf("Can't add watch for %s.\n", wd_array[i].name);
return -1;
}
wd_array[i].wd = wd;
}
for (;;)
{
index = 0;
len = 0;
while (((len = read(fd, &buf, sizeof(buf))) < 0) && (errno == EINTR));
while (index < len)
{
event = (struct inotify_event *)(buf + index);
inotify_event_handler(event);
index += sizeof(struct inotify_event) + event->len;
}
}
for (i=0; i<MONITOR_NUM; i++)
inotify_rm_watch(fd, wd_array[i].wd);
close(fd);
return 0;
}

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