Andreas Kling d0c5979d96 Kernel: Add "prot_exec" pledge promise and require it for PROT_EXEC ...

This prevents sys$mmap() and sys$mprotect() from creating executable
memory mappings in pledged programs that don't have this promise.

Note that the dynamic loader runs before pledging happens, so it's
unaffected by this.

2021-01-29 18:56:34 +01:00

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