Re: [RFC PATCH] fs: introduce mkdirat2 syscall for atomic mkdir
From: Drew DeVault <hidden>
Date: 2021-02-28 02:27:21
Also in:
linux-api
On Sat Feb 27, 2021 at 9:24 PM EST, Matthew Wilcox wrote:
Where's the problem? If mkdir succeeds in a sticky directory, others can't remove or rename it. So how can an app be tricked into doing something wrong?
It's not a security concern, it's just about about making the software more robust. 1. Program A creates a directory 2. Program A is pre-empted 3. Program B deletes the directory 4. Program A creates a file in that directory 5. RIP