1  /* Copyright (C) 1994-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <sys/types.h>
      19  #include <sys/mman.h>
      20  #include <errno.h>
      21  #include <mach.h>
      22  
      23  /* Deallocate any mapping for the region starting at ADDR and extending LEN
      24     bytes.  Returns 0 if successful, -1 for errors (and sets errno).  */
      25  
      26  int
      27  __munmap (void *addr, size_t len)
      28  {
      29    kern_return_t err;
      30  
      31    if (addr == 0)
      32      {
      33        errno = EINVAL;
      34        return -1;
      35      }
      36  
      37    if (err = __vm_deallocate (__mach_task_self (),
      38  			     (vm_address_t) addr, (vm_size_t) len))
      39      {
      40        errno = err;
      41        return -1;
      42      }
      43    return 0;
      44  }
      45  
      46  libc_hidden_def (__munmap)
      47  weak_alias (__munmap, munmap)