mprotect
========
:title: Shellcode Compiler Runtime

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int mprotect(void* addr, size_t len, int prot);
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Changes the protection on a block of memory of `len` bytes starting at `addr` to `prot`.

The protection flags in `prot` can include one or more of `PROT_READ`, `PROT_WRITE`, and `PROT_EXEC`.

Returns zero on success, or the negation of the error code on failure.

See also
--------
link:mmap.html[mmap]