diff options
| author | Jens Axboe <axboe@kernel.dk> | 2019-04-19 22:38:09 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-09 23:32:14 +0300 |
| commit | aa1fa28fc73ea6b740ee7b62bf3b07141883dbb8 (patch) | |
| tree | 85963ae2cf72deda9bea41efd9492c94e9344b8b /net | |
| parent | 0fa03c624d8fc9932d0f27c39a9deca6a37e0e17 (diff) | |
| download | linux-aa1fa28fc73ea6b740ee7b62bf3b07141883dbb8.tar.xz | |
io_uring: add support for recvmsg()
This is done through IORING_OP_RECVMSG. This opcode uses the same
sqe->msg_flags that IORING_OP_SENDMSG added, and we pass in the
msghdr struct in the sqe->addr field as well.
We use MSG_DONTWAIT to force an inline fast path if recvmsg() 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')
| -rw-r--r-- | net/socket.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c index b9536940255e..98354cc18840 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2494,6 +2494,14 @@ out_freeiov: * BSD recvmsg interface */ +long __sys_recvmsg_sock(struct socket *sock, struct user_msghdr __user *msg, + unsigned int flags) +{ + struct msghdr msg_sys; + + return ___sys_recvmsg(sock, msg, &msg_sys, flags, 0); +} + long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) { |