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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-13 19:33:09 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:07 +0200
commita87d35d87a3e4f2a0b0968d1f06703c909138b62 (patch)
tree3a4d6ea3ad0acf1a2d510a220e8fd3d75fdc4ecd /net/socket.c
parent9d6a15c3f23bcf0b0e6c6efd7d19f52d960a8697 (diff)
net: socket: add __sys_bind() helper; remove in-kernel call to syscall
Using the net-internal helper __sys_bind() allows us to avoid the internal calls to the sys_bind() syscall. 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@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c
index 07f379e50def..291cdae97341 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1462,7 +1462,7 @@ out:
* the protocol layer (having also checked the address is ok).
*/
-SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
+int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen)
{
struct socket *sock;
struct sockaddr_storage address;
@@ -1485,6 +1485,11 @@ SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
return err;
}
+SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen)
+{
+ return __sys_bind(fd, umyaddr, addrlen);
+}
+
/*
* Perform a listen. Basically, we allow the protocol to do anything
* necessary for a listen, and if that works, we mark the socket as
@@ -2471,7 +2476,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
err = __sys_socket(a0, a1, a[2]);
break;
case SYS_BIND:
- err = sys_bind(a0, (struct sockaddr __user *)a1, a[2]);
+ err = __sys_bind(a0, (struct sockaddr __user *)a1, a[2]);
break;
case SYS_CONNECT:
err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]);