Messages in this thread Patch in this message | | | Date | Thu, 9 Dec 2010 17:17:34 +0100 | From | Martin Lucina <> | Subject | [PATCH] Document the kernel_recvmsg() function |
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Hi,
so, today we spent all day figuring out how the kernel_sendmsg() function *actually* works. This patch adds some documentation to help the next poor sod.
-mato
From b29ccddeec4b782d710ffe34e0e5e4a0f5e9c24b Mon Sep 17 00:00:00 2001 From: Martin Lucina <mato@kotelna.sk> Date: Thu, 9 Dec 2010 17:11:18 +0100 Subject: [PATCH] Document the kernel_recvmsg() function
Signed-off-by: Martin Lucina <mato@kotelna.sk> --- net/socket.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/net/socket.c b/net/socket.c index 3ca2fd9..b17333d 100644 --- a/net/socket.c +++ b/net/socket.c @@ -732,6 +732,21 @@ static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg, return ret; } +/** + * kernel_recvmsg() - Receive a message from a socket (kernel space) + * @sock: The socket to receive the message from + * @msg: Received message + * @vec: Input s/g array for message data + * @num: Size of input s/g array + * @size: Number of bytes to read + * @flags: Message flags (MSG_DONTWAIT, etc...) + * + * On return the msg structure contains the scatter/gather array passed in the + * vec argument. The array is modified so that it consists of the unfilled + * portion of the original array. + * + * The returned value is the total number of bytes received, or an error. + */ int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size, int flags) { -- 1.7.1
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