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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-13 19:33:09 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:07 +0200 |
| commit | a87d35d87a3e4f2a0b0968d1f06703c909138b62 (patch) | |
| tree | 3a4d6ea3ad0acf1a2d510a220e8fd3d75fdc4ecd /net/socket.c | |
| parent | 9d6a15c3f23bcf0b0e6c6efd7d19f52d960a8697 (diff) | |
| download | lwn-a87d35d87a3e4f2a0b0968d1f06703c909138b62.tar.gz lwn-a87d35d87a3e4f2a0b0968d1f06703c909138b62.zip | |
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.c | 9 |
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]); |