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#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
int main() {
struct pollfd multi[5];
multi[0].fd = open("/file", O_RDONLY, 0777);
multi[1].fd = open("/device", O_RDONLY, 0777);
multi[2].fd = 123;
multi[3].fd = open("/file", O_RDONLY, 0777);
multi[4].fd = open("/file", O_RDONLY, 0777);
multi[0].events = POLLIN | POLLOUT | POLLNVAL | POLLERR;
multi[1].events = POLLIN | POLLOUT | POLLNVAL | POLLERR;
multi[2].events = POLLIN | POLLOUT | POLLNVAL | POLLERR;
multi[3].events = 0x00;
multi[4].events = POLLOUT | POLLNVAL | POLLERR;
printf("ret: %d\n", poll(multi, 5, 123));
printf("errno: %d\n", errno);
printf("multi[0].revents: %d\n", multi[0].revents == (POLLIN | POLLOUT));
printf("multi[1].revents: %d\n", multi[1].revents == (POLLIN | POLLOUT));
printf("multi[2].revents: %d\n", multi[2].revents == POLLNVAL);
printf("multi[3].revents: %d\n", multi[3].revents == 0);
printf("multi[4].revents: %d\n", multi[4].revents == POLLOUT);
return 0;
}
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