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#include <sys/mman.h>
#include "libc.h"
#include "syscall.h"
int mprotect(void *addr, size_t len, int prot)
{
size_t start, end;
start = (size_t)addr & -PAGE_SIZE;
end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE;
return syscall(SYS_mprotect, start, end-start, prot);
}
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