1 files changed, 19 insertions, 7 deletions

diff --git a/include/linux/socket.h b/include/linux/socket.h
index ec538fc287a6..6e49a14365dc 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -47,16 +47,25 @@ struct linger {
 struct msghdr {
         void            *msg_name;      /* ptr to socket address structure */
         int             msg_namelen;    /* size of socket address structure */
-        struct iovec    *msg_iov;       /* scatter/gather array */
-        __kernel_size_t msg_iovlen;     /* # elements in msg_iov */
+        struct iov_iter msg_iter;       /* data */
         void            *msg_control;   /* ancillary data */
         __kernel_size_t msg_controllen; /* ancillary data buffer length */
         unsigned int    msg_flags;      /* flags on received message */
 };
+ 
+struct user_msghdr {
+        void            __user *msg_name;       /* ptr to socket address structure */
+        int             msg_namelen;            /* size of socket address structure */
+        struct iovec    __user *msg_iov;        /* scatter/gather array */
+        __kernel_size_t msg_iovlen;             /* # elements in msg_iov */
+        void            __user *msg_control;    /* ancillary data */
+        __kernel_size_t msg_controllen;         /* ancillary data buffer length */
+        unsigned int    msg_flags;              /* flags on received message */
+};
 
 /* For recvmmsg/sendmmsg */
 struct mmsghdr {
-        struct msghdr   msg_hdr;
+        struct user_msghdr  msg_hdr;
         unsigned int        msg_len;
 };
 
@@ -94,6 +103,10 @@ struct cmsghdr {
                              (cmsg)->cmsg_len <= (unsigned long) \
                              ((mhdr)->msg_controllen - \
                               ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
+#define for_each_cmsghdr(cmsg, msg) \
+        for (cmsg = CMSG_FIRSTHDR(msg); \
+             cmsg; \
+             cmsg = CMSG_NXTHDR(msg, cmsg))
 
 /*
  *      Get the next cmsg header
@@ -256,7 +269,7 @@ struct ucred {
 #define MSG_EOF         MSG_FIN
 
 #define MSG_FASTOPEN    0x20000000      /* Send data in TCP SYN */
-#define MSG_CMSG_CLOEXEC 0x40000000     /* Set close_on_exit for file
+#define MSG_CMSG_CLOEXEC 0x40000000     /* Set close_on_exec for file
                                            descriptor received through
                                            SCM_RIGHTS */
 #if defined(CONFIG_COMPAT)
@@ -312,15 +325,14 @@ extern int csum_partial_copy_fromiovecend(unsigned char *kdata,
 extern unsigned long iov_pages(const struct iovec *iov, int offset,
                                unsigned long nr_segs);
 
-extern int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *address, int mode);
 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr);
 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
 
 struct timespec;
 
 /* The __sys_...msg variants allow MSG_CMSG_COMPAT */
-extern long __sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags);
-extern long __sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
+extern long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
+extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
 extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
                           unsigned int flags, struct timespec *timeout);
 extern int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg,