iov

We also can send the message to the struct msghdr msg: struct iovec iov; iov. iov_base = (void *) nlh; iov. iov_len = nlh - > nlmsg_len; msg. msg_iov = & iov; msg. msg_iovlen = 1;

Linux Journal - The Original Magazine of the Linux Community 2009

It writes data to file descriptor fd from the first iovcnt rows of the iov pth_writev (2) suspends execution of the current thread until the file descriptor is ready for reading.

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The flowers of this ftirub alfo furnifli another kind of tea; but thcL* who are defircus of procuring it, muft pay a fuperlor price iov it.

An historical, geographical, and philosophical view of the Chinese Empire : comprehending a description of the fifteen provinces of China, Chinese Tartary, tributary states, natural history of China, government, religion, laws, manners and customs, literature, arts, sciences, manufactures, &c. : in two volumes 1796

One oi London mint has Jraci iov Frank -, another of Tork mint wants Meum, and the like.

An Historical Account of English Money: Illus. with Copper Plates and Tables of Gold and Silver ... Stephen Martin Leake 1793

By this prcfcription he cannot have hay; iov garba i$ always corn, and therefore this prcfcription cannot ftand with the compoiition. —

Reports of Sir George Croke, knight. Formerly one of the justices of the courts of Kings-bench, and common-pleas, of such select cases as were adjudged in the said courts [1582-1641] 1790

S7 of its incoveniences, we gather that it was then open only for foot pafTengers; Alphonfus the Firil widened it iov carriages, and fince his reign it has been confiderably heightened and levelled.

Travels in the two Sicilies 1783

As iov knowledge, that encreafeth forroiv: Now f arrow is a perturbation of mind in the apprehenfion of fome prefent evil, whicli we are not able to conteft with or avoid.

Sermons preach'd upon several occasions 1701

* Ae Iifiia. be kiiAc iov \xt tt\ wierj Vwiie» - which The Beauties of all ibe conld be Tiirpcflecl to gtve her flielter.

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It then fills the struct msghdr msg as shown below and uses the standard recvmsg () to receive the netlink message, assuming the buffer is pointed to by nlh: struct sockaddr_nl nladdr; struct msghdr msg; struct iovec iov; iov. iov_base = (void *) nlh; iov. iov_len = MAX_NL_MSG_LEN; msg. msg_name = (void *) & (nladdr); msg. msg_namelen = sizeof (nladdr); msg. msg_iov = & iov; msg. msg_iovlen = 1; recvmsg (fd, & msg, 0);

Linux Journal - The Original Magazine of the Linux Community 2009

/ * Fill the netlink message header * / nlh - > nlmsg_len = NLMSG_SPACE (MAX_PAYLOAD); nlh - > nlmsg_pid = getpid (); nlh - > nlmsg_flags = 0; strcpy (NLMSG_DATA (nlh), "Yoo-hoo, Mr. Kernel!"); iov. iov_base = (void *) nlh; iov. iov_len = nlh - > nlmsg_len; msg. msg_name = (void *) & dst_addr; msg. msg_namelen = sizeof (dst_addr); msg. msg_iov = & iov; msg. msg_iovlen = 1; sendmsg (sock_fd, & msg, 0);

Linux Journal - The Original Magazine of the Linux Community 2009