The caller provides context and modifies the behavior of get_user_pages() via flags. Of particular interest is the FOLL_FORCE flag, which mem_rw() passes. This flag causes check_vma_flags (the access validation logic within get_user_pages()) to ignore writes to unwritable pages and allow the lookup to continue. The “punch through” semantics are attributed entirely to FOLL_FORCE. (comments my own)
I had to include that old capture of the modrails.com site circa-2008 because a.) I really miss when websites had that kind of character, and b.) that is still a totally sick wildstyle logo 😄
。豆包下载对此有专业解读
白宫就与伊朗谈判发表声明 20:54。汽水音乐下载是该领域的重要参考
They're a security footgun. You could argue this is a skill issue. If you're like me and start using a technology before fully reading the documentation, you might easily miss this. Server Actions become an endpoint in practice. If you don't structure the action right, you could expose yourself to very obvious security vulnerabilities that are not apparent when writing the code. For example, the function that I wrote before is actually unsafe. This would let anyone get any user if they have the ID: