linux-kernel - [PATCH 023/109] net: socket: replace calls to sys_send() with __sys

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Message-Id: <20180329112426.23043-24-linux@dominikbrodowski.net>
Date:   Thu, 29 Mar 2018 13:23:00 +0200
From:   Dominik Brodowski <linux@...inikbrodowski.net>
To:     linux-kernel@...r.kernel.org
Cc:     viro@...IV.linux.org.uk, torvalds@...ux-foundation.org,
        arnd@...db.de, linux-arch@...r.kernel.org,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH 023/109] net: socket: replace calls to sys_send() with __sys_sendto()

sys_send() merely expands the parameters to __sys_sendto() by NULL and 0.
Open-code this in the two places which used sys_send() as a wrapper to
__sys_sendto().

This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net

Cc: David S. Miller <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>
---
 net/compat.c | 2 +-
 net/socket.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/compat.c b/net/compat.c
index 5caa48987bb2..d55982ff5c59 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -837,7 +837,7 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
 		ret = __sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
 		break;
 	case SYS_SEND:
-		ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
+		ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3], NULL, 0);
 		break;
 	case SYS_SENDTO:
 		ret = __sys_sendto(a0, compat_ptr(a1), a[2], a[3],
diff --git a/net/socket.c b/net/socket.c
index a70793a7ce78..92de21bb1a2e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2558,7 +2558,8 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
 		err = __sys_socketpair(a0, a1, a[2], (int __user *)a[3]);
 		break;
 	case SYS_SEND:
-		err = sys_send(a0, (void __user *)a1, a[2], a[3]);
+		err = __sys_sendto(a0, (void __user *)a1, a[2], a[3],
+				   NULL, 0);
 		break;
 	case SYS_SENDTO:
 		err = __sys_sendto(a0, (void __user *)a1, a[2], a[3],
-- 
2.16.3