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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 10:36:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-13 10:36:53 -0700
commita2d79c7174aeb43b13020dd53d85a7aefdd9f3e5 (patch)
tree6873d0b44b98eb8038207f0d3fa849264f0fe642 /include/linux
parent964a4eacef67503a1154f7e0a75f52fbdce52022 (diff)
parenta4c0b3decb33fb4a2b5ecc6234a50680f0b21e7d (diff)
downloadlinux-a2d79c7174aeb43b13020dd53d85a7aefdd9f3e5.tar.gz
Merge tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe: "This contains: - Support for recvmsg/sendmsg as first class opcodes. I don't envision going much further down this path, as there are plans in progress to support potentially any system call in an async fashion through io_uring. But I think it does make sense to have certain core ops available directly, especially those that can support a "try this non-blocking" flag/mode. (me) - Handle generic short reads automatically. This can happen fairly easily if parts of the buffered read is cached. Since the application needs to issue another request for the remainder, just do this internally and save kernel/user roundtrip while providing a nicer more robust API. (me) - Support for linked SQEs. This allows SQEs to depend on each other, enabling an application to eg queue a read-from-this-file,write-to-that-file pair. (me) - Fix race in stopping SQ thread (Jackie)" * tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block: io_uring: fix io_sq_thread_stop running in front of io_sq_thread io_uring: add support for recvmsg() io_uring: add support for sendmsg() io_uring: add support for sqe links io_uring: punt short reads to async context uio: make import_iovec()/compat_import_iovec() return bytes on success
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/socket.h7
-rw-r--r--include/linux/uio.h4
2 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h
index b57cd8bf96e2..97523818cb14 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 +375,12 @@ 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);
+extern long __sys_recvmsg_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,
diff --git a/include/linux/uio.h b/include/linux/uio.h
index cea1761c5672..ab5f523bc0df 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -267,13 +267,13 @@ bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum, struct
size_t hash_and_copy_to_iter(const void *addr, size_t bytes, void *hashp,
struct iov_iter *i);
-int import_iovec(int type, const struct iovec __user * uvector,
+ssize_t import_iovec(int type, const struct iovec __user * uvector,
unsigned nr_segs, unsigned fast_segs,
struct iovec **iov, struct iov_iter *i);
#ifdef CONFIG_COMPAT
struct compat_iovec;
-int compat_import_iovec(int type, const struct compat_iovec __user * uvector,
+ssize_t compat_import_iovec(int type, const struct compat_iovec __user * uvector,
unsigned nr_segs, unsigned fast_segs,
struct iovec **iov, struct iov_iter *i);
#endif