在上面的检测对抗中,我们hook了libc.so中的fread、strstr、open等系统函数,但是如果app不讲武德,自实现这些函数,阁下又该如何应对? 在用户空间和内核空间之间,有一个叫做Syscall(系统调用, system call)的中间层,是连接用户态和内核态的桥梁。这样即提高了内核 ...
Given a non-empty binary tree, find the maximum path sum. For this problem, a path is defined as any sequence of nodes from some starting node to any node in the tree along the parent-child ...