...or overhead. Ancillary messages Ancillary data is sent and received using sendmsg (2) and recvmsg (2). For historical reasons, the ancillary message types listed below are speci…...ct (2) operation is not supported on packet sockets. When the MSG_TRUNC flag is passed to recvmsg (2), recv (2), or recvfrom (2), the real length of the packet on the wire is al…...y context of the peer socket in an ancillary message of type SCM_SECURITY retrieved using recvmsg (2). This option is supported only for UDP sockets; for TCP or SCTP sockets, se…...t is up to the application to detect when this happens (via the ENOBUFS error returned by recvmsg (2)) and resynchronize. Address formats The sockaddr_nl structure describes a n…...e routing tables, devices, AARP tables, and other devices are not yet described. SEE ALSO recvmsg (2), sendmsg (2), capabilities (7), socket (7)...&nladdr, .msg_namelen = sizeof(nladdr), .msg_iov = &iov, .msg_iovlen = 1 }; ssize_t ret = recvmsg(fd, &msg, flags); if (ret < 0) { if (errno == EINTR) continue; perror("recvmsg"…overview of signals NAME signal - overview of signals DESCRIPTION Linux supports both POSIX reliable signals (hereinafter "standard signals") and POSIX real-time signals. Signal di…...as bound to or that was specified in the initial socket (2) call is always used. SEE ALSO recvmsg (2), sendmsg (2), capabilities (7), ip (7), socket (7) RFC 1191 for path MTU di…...ption is enabled, all errors are stored in the socket error queue, and can be received by recvmsg (2) with the MSG_ERRQUEUE flag set. /proc interfaces System-wide UDP parameter …...aise (3) read (2) readlink (2) readlinkat (2) Added in POSIX.1-2008 recv (2) recvfrom (2) recvmsg (2) rename (2) renameat (2) Added in POSIX.1-2008 rmdir (2) select (2) sem_post…...end (2), sendto (2), and sendmsg (2) send data over a socket, and recv (2), recvfrom (2), recvmsg (2) receive data from a socket. poll (2) and select (2) wait for arriving data …...ed below), otherwise it can be received only when the MSG_OOB flag is set for recv (2) or recvmsg (2). When out-of-band data is present, select (2) indicates the file descriptor…..._join() pthread_testcancel() putmsg() putpmsg() pwrite() read() readv() recv() recvfrom() recvmsg() select() sem_timedwait() sem_wait() send() sendmsg() sendto() sigpause() [POS…Index of configuration directives NAME systemd.directives - Index of configuration directives UNIT DIRECTIVES Directives for configuring units, used in unit files. Accept= systemd.…