diff options
Diffstat (limited to 'man3/cmsg.3')
| -rw-r--r-- | man3/cmsg.3 | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/man3/cmsg.3 b/man3/cmsg.3 index 8e7b857b24..ee7ba45e0a 100644 --- a/man3/cmsg.3 +++ b/man3/cmsg.3 @@ -160,27 +160,9 @@ For more information on the .IR msghdr , see .BR recvmsg (2). -.SH STANDARDS -This ancillary data model conforms to the POSIX.1g draft, 4.4BSD-Lite, -the IPv6 advanced API described in RFC\ 2292 and SUSv2. -.BR CMSG_FIRSTHDR (), -.BR CMSG_NXTHDR (), -and -.BR CMSG_DATA () -are specified in POSIX.1-2008. -.BR CMSG_SPACE () -and -.BR CMSG_LEN () -.\" https://www.austingroupbugs.net/view.php?id=978#c3242 -will be included in the next POSIX release (Issue 8). -.PP -.BR CMSG_ALIGN () -is a Linux extension. -.SH NOTES +.SH VERSIONS For portability, ancillary data should be accessed using only the macros described here. -.BR CMSG_ALIGN () -is a Linux extension and should not be used in portable programs. .PP In Linux, .BR CMSG_LEN (), @@ -190,6 +172,30 @@ and are constant expressions (assuming their argument is constant), meaning that these values can be used to declare the size of global variables. This may not be portable, however. +.SH STANDARDS +.TP +.BR CMSG_FIRSTHDR () +.TQ +.BR CMSG_NXTHDR () +.TQ +.BR CMSG_DATA () +POSIX.1-2008. +.TP +.BR CMSG_SPACE () +.TQ +.BR CMSG_LEN () +.TQ +.BR CMSG_ALIGN () +Linux. +.SH HISTORY +This ancillary data model conforms to the POSIX.1g draft, 4.4BSD-Lite, +the IPv6 advanced API described in RFC\ 2292 and SUSv2. +.PP +.BR CMSG_SPACE () +and +.BR CMSG_LEN () +.\" https://www.austingroupbugs.net/view.php?id=978#c3242 +will be included in the next POSIX release (Issue 8). .SH EXAMPLES This code looks for the .B IP_TTL |