sys/src/mprotect.c


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#include "internal.h"

int
sys·mprotect(void *addr, uintptr len, int prot)
{
    long ret;
    uintptr beg, end;

    beg = (uintptr)addr & -PAGESIZE;
    end = (uintptr)(addr + len + PAGESIZE-1) & -PAGESIZE;

    ret = syscall(·MProtect, beg, end-beg, prot);
    return error(ret);
}