#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdint.h>
#include <inttypes.h>

struct Task
{
    unsigned uid;
    int gid_count;
    unsigned *gids;
};

int
myaccess(const struct stat *stb, const struct Task *task, int access) {
    if (task->uid == 0) {
        return 1;
    }

    unsigned uaccess = access;
    if (task->uid == stb->st_uid) {
        return ((stb->st_mode & (uaccess << 6)) == (uaccess << 6));
    }

    for (int i = 0; i < task->gid_count; ++i) {
        if (task->gids[i] == stb->st_gid) {
            return ((stb->st_mode & (uaccess << 3)) == (uaccess << 3));
        }
    }

    return ((stb->st_mode & uaccess) == uaccess);
}