src-test/lib/libc/gen/recvmmsg.c, branch main FreeBSD source tree https://cgit-dev.freebsd.org/src-test/atom?h=main 2016-10-11T11:46:02Z Correct indent. 2016-10-11T11:46:02Z Konstantin Belousov kib@FreeBSD.org 2016-10-11T11:46:02Z urn:sha1:6886c70100ae9ea426be4512dd4f645910a038b0 Sponsored by: The FreeBSD Foundation MFC after: 3 days Fill msg_len for the initial element of msgvec. 2016-10-11T11:45:12Z Konstantin Belousov kib@FreeBSD.org 2016-10-11T11:45:12Z urn:sha1:c3b83049d682c494aa0947e0db801817e1b94cc3 Submitted by: Daniel Salzman <daniel.salzman@nic.cz> MFC after: 3 days Add implementations of sendmmsg(3) and recvmmsg(3) functions which 2016-01-29T14:12:12Z Konstantin Belousov kib@FreeBSD.org 2016-01-29T14:12:12Z urn:sha1:bf420ace0a5ebf0e737125511bbd8f94a4d29c1a wraps sendmsg(2) and recvmsg(2) into batch send and receive operation. The goal of this implementation is only to provide API compatibility with Linux. The cancellation behaviour of the functions is not quite right, but due to relative rare use of cancellation it is considered acceptable comparing with the complexity of the correct implementation. If functions are reimplemented as syscalls, the fix would come almost trivial. The direct use of the syscall trampolines instead of libc wrappers for sendmsg(2) and recvmsg(2) is to avoid data loss on cancellation. Submitted by: Boris Astardzhiev <boris.astardzhiev@gmail.com> Discussed with: jilles (cancellation behaviour) MFC after: 1 month