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authorJens Axboe <axboe@kernel.dk>2019-04-19 22:34:07 +0300
committerJens Axboe <axboe@kernel.dk>2019-07-09 23:32:05 +0300
commit0fa03c624d8fc9932d0f27c39a9deca6a37e0e17 (patch)
tree50924290ab944d1a68dcacb69c04d100c6d3049b /net/socket.c
parent9e645e1105ca60fbbc6bddf2fd5ef7e57ed3dca8 (diff)
downloadlinux-0fa03c624d8fc9932d0f27c39a9deca6a37e0e17.tar.xz
io_uring: add support for sendmsg()
This is done through IORING_OP_SENDMSG. There's a new sqe->msg_flags for the flags argument, and the msghdr struct is passed in the sqe->addr field. We use MSG_DONTWAIT to force an inline fast path if sendmsg() doesn't block, and punt to async execution if it would have. Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c
index bffec466b4f1..b9536940255e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2313,6 +2313,13 @@ out_freeiov:
/*
* BSD sendmsg interface
*/
+long __sys_sendmsg_sock(struct socket *sock, struct user_msghdr __user *msg,
+ unsigned int flags)
+{
+ struct msghdr msg_sys;
+
+ return ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL, 0);
+}
long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags,
bool forbid_cmsg_compat)