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authorSridhar Samudrala <sri@us.ibm.com>2006-08-07 20:57:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 14:54:05 -0700
commitac5a488ef252ed673cb067843e411f8cc43f7ab9 (patch)
treee607478560ed050723fe5e578dc5ede37bedfa93
parentb63bbc5006a0a62fabc81c4f77e95f16ff16f340 (diff)
[NET]: Round out in-kernel sockets API
This patch implements wrapper functions that provide a convenient way to access the sockets API for in-kernel users like sunrpc, cifs & ocfs2 etc and any future users. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/net.h19
-rw-r--r--net/socket.c113
2 files changed, 132 insertions, 0 deletions
diff --git a/include/linux/net.h b/include/linux/net.h
index b20c53c7441..19da2c08d7b 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -208,6 +208,25 @@ extern int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
struct kvec *vec, size_t num,
size_t len, int flags);
+extern int kernel_bind(struct socket *sock, struct sockaddr *addr,
+ int addrlen);
+extern int kernel_listen(struct socket *sock, int backlog);
+extern int kernel_accept(struct socket *sock, struct socket **newsock,
+ int flags);
+extern int kernel_connect(struct socket *sock, struct sockaddr *addr,
+ int addrlen, int flags);
+extern int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
+ int *addrlen);
+extern int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
+ int *addrlen);
+extern int kernel_getsockopt(struct socket *sock, int level, int optname,
+ char *optval, int *optlen);
+extern int kernel_setsockopt(struct socket *sock, int level, int optname,
+ char *optval, int optlen);
+extern int kernel_sendpage(struct socket *sock, struct page *page, int offset,
+ size_t size, int flags);
+extern int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg);
+
#ifndef CONFIG_SMP
#define SOCKOPS_WRAPPED(name) name
#define SOCKOPS_WRAP(name, fam)
diff --git a/net/socket.c b/net/socket.c
index 6756e57e1ff..2eaebf934a1 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2170,6 +2170,109 @@ static long compat_sock_ioctl(struct file *file, unsigned cmd,
}
#endif
+int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
+{
+ return sock->ops->bind(sock, addr, addrlen);
+}
+
+int kernel_listen(struct socket *sock, int backlog)
+{
+ return sock->ops->listen(sock, backlog);
+}
+
+int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
+{
+ struct sock *sk = sock->sk;
+ int err;
+
+ err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol,
+ newsock);
+ if (err < 0)
+ goto done;
+
+ err = sock->ops->accept(sock, *newsock, flags);
+ if (err < 0) {
+ sock_release(*newsock);
+ goto done;
+ }
+
+ (*newsock)->ops = sock->ops;
+
+done:
+ return err;
+}
+
+int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
+ int flags)
+{
+ return sock->ops->connect(sock, addr, addrlen, flags);
+}
+
+int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
+ int *addrlen)
+{
+ return sock->ops->getname(sock, addr, addrlen, 0);
+}
+
+int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
+ int *addrlen)
+{
+ return sock->ops->getname(sock, addr, addrlen, 1);
+}
+
+int kernel_getsockopt(struct socket *sock, int level, int optname,
+ char *optval, int *optlen)
+{
+ mm_segment_t oldfs = get_fs();
+ int err;
+
+ set_fs(KERNEL_DS);
+ if (level == SOL_SOCKET)
+ err = sock_getsockopt(sock, level, optname, optval, optlen);
+ else
+ err = sock->ops->getsockopt(sock, level, optname, optval,
+ optlen);
+ set_fs(oldfs);
+ return err;
+}
+
+int kernel_setsockopt(struct socket *sock, int level, int optname,
+ char *optval, int optlen)
+{
+ mm_segment_t oldfs = get_fs();
+ int err;
+
+ set_fs(KERNEL_DS);
+ if (level == SOL_SOCKET)
+ err = sock_setsockopt(sock, level, optname, optval, optlen);
+ else
+ err = sock->ops->setsockopt(sock, level, optname, optval,
+ optlen);
+ set_fs(oldfs);
+ return err;
+}
+
+int kernel_sendpage(struct socket *sock, struct page *page, int offset,
+ size_t size, int flags)
+{
+ if (sock->ops->sendpage)
+ return sock->ops->sendpage(sock, page, offset, size, flags);
+
+ return sock_no_sendpage(sock, page, offset, size, flags);
+}
+
+int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)
+{
+ mm_segment_t oldfs = get_fs();
+ int err;
+
+ set_fs(KERNEL_DS);
+ err = sock->ops->ioctl(sock, cmd, arg);
+ set_fs(oldfs);
+
+ return err;
+}
+
/* ABI emulation layers need these two */
EXPORT_SYMBOL(move_addr_to_kernel);
EXPORT_SYMBOL(move_addr_to_user);
@@ -2186,3 +2289,13 @@ EXPORT_SYMBOL(sock_wake_async);
EXPORT_SYMBOL(sockfd_lookup);
EXPORT_SYMBOL(kernel_sendmsg);
EXPORT_SYMBOL(kernel_recvmsg);
+EXPORT_SYMBOL(kernel_bind);
+EXPORT_SYMBOL(kernel_listen);
+EXPORT_SYMBOL(kernel_accept);
+EXPORT_SYMBOL(kernel_connect);
+EXPORT_SYMBOL(kernel_getsockname);
+EXPORT_SYMBOL(kernel_getpeername);
+EXPORT_SYMBOL(kernel_getsockopt);
+EXPORT_SYMBOL(kernel_setsockopt);
+EXPORT_SYMBOL(kernel_sendpage);
+EXPORT_SYMBOL(kernel_sock_ioctl);