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A comment on A deep dive into Linux's new mseal syscall.

Re:A deep dive into Linux's new mseal syscall by xterminator on Friday October 25, 2024 @04:01PM (#41949086)
OpenBSD has had it since forever [1]. Why is such an obvious feature only reaching Linux now?

[1]https://man.openbsd.org/mimmutable.2

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Re:A deep dive into Linux's new mseal syscall by gilgamesh3 on Friday October 25, 2024 @04:08PM (#41949163)
>OpenBSD has had it since forever.

OpenBSD introduced mimmutable in OpenBSD 7.3, which was released 10/4/2023 (for US people, it would be 4/10/2023), so it isn't "forever".

Meanwhile Linux and FreeBSD has "memfd_create" forever while OpenBSD doesn't have anonymous files and relies on "shm_open".

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Re:A deep dive into Linux's new mseal syscall by pushupentry1219 on Friday October 25, 2024 @09:48PM (#41951834)
> OpenBSD introduced mimmutable in OpenBSD 7.3

Correct but they did have a very similar syscall for a long time that they deprecated after the release of mimmutable iirc

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