Hacking: The Art of Exploitation 读书笔记（二）C文件I/O

fd = open( ‘file’, access_mode, permissions)
write( fd, buffer, strlen(buffer) )
read( fd, &buffer, length )
close( fd )
lseek( fd, length* -1, SEEK_CUR ): move the read position forward from the current position by length * -1fd = open( ‘f