socket/sys/un.h

   1 /* Copyright (C) 1991-2024 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 #ifndef _SYS_UN_H
  19 #define _SYS_UN_H       1
  20
  21 #include <sys/cdefs.h>
  22
  23 /* Get the definition of the macro to define the common sockaddr members.  */
  24 #include <bits/sockaddr.h>
  25
  26 __BEGIN_DECLS
  27
  28 /* Structure describing the address of an AF_LOCAL (aka AF_UNIX) socket.  */
  29 struct __attribute_struct_may_alias__ sockaddr_un
  30   {
  31     __SOCKADDR_COMMON (sun_);
  32     char sun_path[108];         /* Path name.  */
  33   };
  34
  35
  36 #ifdef __USE_MISC
  37 # include <stddef.h>
  38 # include <string.h>            /* For prototype of `strlen'.  */
  39
  40 /* Evaluate to actual length of the `sockaddr_un' structure.  */
  41 # define SUN_LEN(ptr) (offsetof (struct sockaddr_un, sun_path)                \
  42                       + strlen ((ptr)->sun_path))
  43 #endif
  44
  45 __END_DECLS
  46
  47 #endif  /* sys/un.h  */