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fix case where CMSG_SPACE() is not a macro

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This commit is contained in:
Michael Graff 2000-03-13 21:09:56 +00:00
parent 34ee961fa2
commit 0205c5a4ad
1 changed files with 8 additions and 7 deletions
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15
lib/isc/unix/socket.c
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@ -107,12 +107,9 @@ typedef isc_event_t intev_t;
* set them on outgoing packets.
*/
#ifdef ISC_PLATFORM_HAVEIPV6
#define PKTINFO_SPACE CMSG_SPACE(sizeof(struct in6_pktinfo))
#ifndef USE_CMSG
#define USE_CMSG 1
#endif
#else
#define PKTINFO_SPACE 0
#endif
/*
@ -121,12 +118,9 @@ typedef isc_event_t intev_t;
* doesn't do it for us, call gettimeofday() on every UDP receive?
*/
#ifdef SO_TIMESTAMP
#define TIMESTAMP_SPACE CMSG_SPACE(sizeof(struct timeval))
#ifndef USE_CMSG
#define USE_CMSG 1
#endif
#else
#define TIMESTAMP_SPACE 0
#endif
/*
@ -139,9 +133,16 @@ typedef isc_event_t intev_t;
/*
* Total cmsg space needed for all of the above bits.
*
* XXXMLG
* This is just a guess at how much space we'll need. Some systems (KAME
* based ipv6 implementations) don't have CMSG_SPACE() as a constant, but
* a function call, so we cannot use an exact-sized buffer. This should
* be large enough for our current uses -- timestamp and a pktinfo structure
* for v6 datagrams.
*/
#ifdef USE_CMSG
#define TOTAL_SPACE (PKTINFO_SPACE + TIMESTAMP_SPACE)
#define TOTAL_SPACE 512
#endif
struct isc_socket {