compat/cmsg.h

   1 #ifndef SQUID_COMPAT_CMSG_H
   2 #define SQUID_COMPAT_CMSG_H
   3
   4 // CMSG_SPACE is not constant on some systems (in particular Max OS X),
   5 // provide a replacement that can be used at build time in that case
   6
   7 #if HAVE_SYS_SOCKET_H
   8 #include <sys/socket.h>
   9 #endif
  10
  11 #if HAVE_CONSTANT_CMSG_SPACE
  12 #define SQUID_CMSG_SPACE CMSG_SPACE
  13 #else
  14 // add 16 bytes for header and data alignment
  15 #define SQUID_CMSG_SPACE(len) (sizeof(struct cmsghdr) + (len) + 16)
  16 #endif
  17
  18 #endif /* SQUID_COMPAT_CMSG_H */