global O_WRONLY = 1;
global O_RDWR = 2;
global O_APPEND = 1024;
global O_CREAT = 64;

global t_path, t_flags;

probe syscall.open {
    t_path[tid()] = filename;
    t_flags[tid()] = flags;
}

probe syscall.open.return {
    flags = t_flags[tid()];

    if(flags & O_RDWR) {
        flags_str = "O_RDWR";
    }
    else if(flags & O_WRONLY) {
        flags_str = "O_WRONLY";
    }
    else {
        flags_str = "O_RDONLY";
    }
    if(flags & O_APPEND) {
        flags_str = sprintf("%s|%s", flags_str, "O_APPEND");
    }
    if(flags & O_CREAT) {
        flags_str = sprintf("%s|%s", flags_str, "O_CREAT");
    }

    printf("%s[%d(%d:%d)] open(%s, %s) = %d\n",
                execname(), pid(), uid(), gid(), 
                t_path[tid()], flags_str, $return);
}