diff options
| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-13 21:35:09 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:15:08 +0300 |
| commit | 1387c2c2f988f8180c6189d5083eaeeb8f120d44 (patch) | |
| tree | 776bab696932ecd185bbcfeee762e5f7ab2b2bb2 | |
| parent | a87d35d87a3e4f2a0b0968d1f06703c909138b62 (diff) | |
| download | linux-1387c2c2f988f8180c6189d5083eaeeb8f120d44.tar.xz | |
net: socket: add __sys_connect() helper; remove in-kernel call to syscall
Using the net-internal helper __sys_connect() allows us to avoid the
internal calls to the sys_connect() 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>
| -rw-r--r-- | include/linux/socket.h | 2 | ||||
| -rw-r--r-- | net/compat.c | 2 | ||||
| -rw-r--r-- | net/socket.c | 11 |
3 files changed, 11 insertions, 4 deletions
diff --git a/include/linux/socket.h b/include/linux/socket.h index e9cee272da13..7daa344d7320 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -365,5 +365,7 @@ extern int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen, int flags); extern int __sys_socket(int family, int type, int protocol); extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen); +extern int __sys_connect(int fd, struct sockaddr __user *uservaddr, + int addrlen); #endif /* _LINUX_SOCKET_H */ diff --git a/net/compat.c b/net/compat.c index bba555b1d863..7ab6352268f3 100644 --- a/net/compat.c +++ b/net/compat.c @@ -817,7 +817,7 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args) ret = __sys_bind(a0, compat_ptr(a1), a[2]); break; case SYS_CONNECT: - ret = sys_connect(a0, compat_ptr(a1), a[2]); + ret = __sys_connect(a0, compat_ptr(a1), a[2]); break; case SYS_LISTEN: ret = sys_listen(a0, a1); diff --git a/net/socket.c b/net/socket.c index 291cdae97341..64bdfdf6c6e7 100644 --- a/net/socket.c +++ b/net/socket.c @@ -1633,8 +1633,7 @@ SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, * include the -EINPROGRESS status for such sockets. */ -SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, - int, addrlen) +int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen) { struct socket *sock; struct sockaddr_storage address; @@ -1660,6 +1659,12 @@ out: return err; } +SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, + int, addrlen) +{ + return __sys_connect(fd, uservaddr, addrlen); +} + /* * Get the local address ('name') of a socket object. Move the obtained * name to user space. @@ -2479,7 +2484,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) err = __sys_bind(a0, (struct sockaddr __user *)a1, a[2]); break; case SYS_CONNECT: - err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]); + err = __sys_connect(a0, (struct sockaddr __user *)a1, a[2]); break; case SYS_LISTEN: err = sys_listen(a0, a1); |