src/mman/mprotect.c

570af302Sopenharmony_ci#include <sys/mman.h>
570af302Sopenharmony_ci#include "libc.h"
570af302Sopenharmony_ci#include "syscall.h"
570af302Sopenharmony_ci
570af302Sopenharmony_ciint __mprotect(void *addr, size_t len, int prot)
570af302Sopenharmony_ci{
570af302Sopenharmony_ci	size_t start, end;
570af302Sopenharmony_ci	start = (size_t)addr & -PAGE_SIZE;
570af302Sopenharmony_ci	end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE;
570af302Sopenharmony_ci	return syscall(SYS_mprotect, start, end-start, prot);
570af302Sopenharmony_ci}
570af302Sopenharmony_ci
570af302Sopenharmony_ciweak_alias(__mprotect, mprotect);