Message 329236 - Python tracker

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> file mode and flags which can be set by os.chmod() and os.chflags() 
> by unprivileged user. 

I remembered incorrectly about chflags. It's not a single immutable flag, but several (depending on the OS). The owner or superuser can modify UF_IMMUTABLE, UF_READONLY, and UF_NOUNLINK. The SF_* flags can only be unset by the superuser in single-user mode.

> It doesn't solve problem when files was made immutable by chattr on
> Linux.

We may not have CAP_LINUX_IMMUTABLE, but we can at least try to clear the immutable flag, no?