src/mman/mprotect.c

   1 #include <sys/mman.h>
   2 #include "libc.h"
   3 #include "syscall.h"
   4
   5 int __mprotect(void *addr, size_t len, int prot)
   6 {
   7         size_t start, end;
   8         start = (size_t)addr & -PAGE_SIZE;
   9         end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE;
  10         return syscall(SYS_mprotect, start, end-start, prot);
  11 }
  12
  13 weak_alias(__mprotect, mprotect);