net/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types

In order to allow the COMPAT_SYSCALL_DEFINE macro generate code that
performs proper zero and sign extension convert all 64 bit parameters
to their corresponding 32 bit compat counterparts.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

diff --git a/include/linux/compat.h b/include/linux/compat.h
index f670e59..8e63621 100644 (file)
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -569,9 +569,9 @@ asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg,
                                    unsigned vlen, unsigned int flags);
 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg,
                                   unsigned int flags);
-asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len,
+asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len,
                                unsigned flags);
-asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
+asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len,
                            unsigned flags, struct sockaddr __user *addr,
                            int __user *addrlen);
 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,

diff --git a/net/compat.c b/net/compat.c
index 706b78b..9a76eaf 100644 (file)
--- a/net/compat.c
+++ b/net/compat.c
@@ -758,14 +758,14 @@ COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, uns
        return __sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT);
 }
 
-asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len, unsigned int flags)
+COMPAT_SYSCALL_DEFINE4(recv, int, fd, void __user *, buf, compat_size_t, len, unsigned int, flags)
 {
        return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT);
 }
 
-asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
-                                   unsigned int flags, struct sockaddr __user *addr,
-                                   int __user *addrlen)
+COMPAT_SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, buf, compat_size_t, len,
+                      unsigned int, flags, struct sockaddr __user *, addr,
+                      int __user *, addrlen)
 {
        return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen);
 }