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Date: Fri, 13 Apr 2007 19:04:30 +0100 From: David Howells <dhowells@...hat.com> To: netdev@...r.kernel.org Subject: Can netlink_recvmsg not truncate messages unless asked to? Would it be feasible to make netlink_recvmsg() _not_ truncate message unless it is asked to by having MSG_TRUNC passed to it? Unless netlink data packets are limited to PAGE_SIZE or less, it's entirely possible that the kernel can be in a situation where it can't guarantee to get a buffer large enough to receive a packet larger than that. What I was trying to do was use recvmsg with MSG_PEEK to grab the nlmsghdr, and then using that to predict the size of the buffer I need. But that doesn't work because a packet might contain multiple netlink messages. David - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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