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authorJens Axboe <axboe@kernel.dk>2019-04-19 13:34:07 -0600
committerJens Axboe <axboe@kernel.dk>2019-07-09 14:32:05 -0600
commit0fa03c624d8fc9932d0f27c39a9deca6a37e0e17 (patch)
tree50924290ab944d1a68dcacb69c04d100c6d3049b /include/linux/socket.h
parent9e645e1105ca60fbbc6bddf2fd5ef7e57ed3dca8 (diff)
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 'include/linux/socket.h')
-rw-r--r--include/linux/socket.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h
index b57cd8bf96e2..9d770ef3ced5 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -12,6 +12,7 @@
struct pid;
struct cred;
+struct socket;
#define __sockaddr_check_size(size) \
BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
@@ -374,6 +375,9 @@ extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg,
extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,
unsigned int vlen, unsigned int flags,
bool forbid_cmsg_compat);
+extern long __sys_sendmsg_sock(struct socket *sock,
+ struct user_msghdr __user *msg,
+ unsigned int flags);
/* helpers which do the actual work for syscalls */
extern int __sys_recvfrom(int fd, void __user *ubuf, size_t size,