From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 9 Dec 2009 20:58:16 +0000 (+0000)
Subject: net: fix compat_sys_recvmmsg parameter type
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=60c2ffd3d2cf12008747d920ae118df119006003;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

net: fix compat_sys_recvmmsg parameter type

compat_sys_recvmmsg has a compat_timespec parameter and not a
timespec parameter. This way we also get rid of an odd cast.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/compat.h b/include/net/compat.h
index 3c7d4e38fa1d..28d5428ec6a2 100644
--- a/include/net/compat.h
+++ b/include/net/compat.h
@@ -46,7 +46,7 @@ extern asmlinkage long compat_sys_sendmsg(int,struct compat_msghdr __user *,unsi
 extern asmlinkage long compat_sys_recvmsg(int,struct compat_msghdr __user *,unsigned);
 extern asmlinkage long compat_sys_recvmmsg(int, struct compat_mmsghdr __user *,
 					   unsigned, unsigned,
-					   struct timespec __user *);
+					   struct compat_timespec __user *);
 extern asmlinkage long compat_sys_getsockopt(int, int, int, char __user *, int __user *);
 extern int put_cmsg_compat(struct msghdr*, int, int, int, void *);
 
diff --git a/net/compat.c b/net/compat.c
index e1a56ade803b..c4d9131a5872 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -754,26 +754,24 @@ asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len,
 
 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg,
 				    unsigned vlen, unsigned int flags,
-				    struct timespec __user *timeout)
+				    struct compat_timespec __user *timeout)
 {
 	int datagrams;
 	struct timespec ktspec;
-	struct compat_timespec __user *utspec;
 
 	if (timeout == NULL)
 		return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
 				      flags | MSG_CMSG_COMPAT, NULL);
 
-	utspec = (struct compat_timespec __user *)timeout;
-	if (get_user(ktspec.tv_sec, &utspec->tv_sec) ||
-	    get_user(ktspec.tv_nsec, &utspec->tv_nsec))
+	if (get_user(ktspec.tv_sec, &timeout->tv_sec) ||
+	    get_user(ktspec.tv_nsec, &timeout->tv_nsec))
 		return -EFAULT;
 
 	datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen,
 				   flags | MSG_CMSG_COMPAT, &ktspec);
 	if (datagrams > 0 &&
-	    (put_user(ktspec.tv_sec, &utspec->tv_sec) ||
-	     put_user(ktspec.tv_nsec, &utspec->tv_nsec)))
+	    (put_user(ktspec.tv_sec, &timeout->tv_sec) ||
+	     put_user(ktspec.tv_nsec, &timeout->tv_nsec)))
 		datagrams = -EFAULT;
 
 	return datagrams;