include/sys/un.h

   1 #ifndef _SYS_UN_H_
   2 #define _SYS_UN_H_
   3
   4 #include <sys/ansi.h>
   5 #include <sys/featuretest.h>
   6 #include <sys/types.h>
   7
   8 #ifndef sa_family_t
   9 typedef __sa_family_t   sa_family_t;
  10 #define sa_family_t     __sa_family_t
  11 #endif
  12
  13 #define UNIX_PATH_MAX 127
  14
  15 /*
  16  * Definitions for UNIX IPC domain.
  17  */
  18 struct  sockaddr_un {
  19         sa_family_t     sun_family;
  20         char            sun_path[UNIX_PATH_MAX];
  21 };
  22
  23 #include <string.h>
  24
  25 /* Compute the actual length of a struct sockaddr_un pointed
  26  * to by 'unp'. sun_path must be NULL terminated. Length does
  27  * not include the NULL byte. This is not a POSIX standard
  28  * definition, but BSD and Linux have it, so it is here for
  29  * compatibility.
  30  */
  31 #define SUN_LEN(unp) \
  32 ((size_t)((sizeof(*(unp)) - sizeof((unp)->sun_path)) + strlen((unp)->sun_path)))
  33
  34 #endif /* _SYS_UN_H_ */