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Diffstat (limited to 'fs/smbfs/sock.c')
-rw-r--r--fs/smbfs/sock.c386
1 files changed, 0 insertions, 386 deletions
diff --git a/fs/smbfs/sock.c b/fs/smbfs/sock.c
deleted file mode 100644
index e37fe4deebd0..000000000000
--- a/fs/smbfs/sock.c
+++ /dev/null
@@ -1,386 +0,0 @@
-/*
- *  sock.c
- *
- *  Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
- *  Copyright (C) 1997 by Volker Lendecke
- *
- *  Please add a note about your changes to smbfs in the ChangeLog file.
- */
-
-#include <linux/fs.h>
-#include <linux/time.h>
-#include <linux/errno.h>
-#include <linux/socket.h>
-#include <linux/fcntl.h>
-#include <linux/file.h>
-#include <linux/in.h>
-#include <linux/net.h>
-#include <linux/mm.h>
-#include <linux/netdevice.h>
-#include <linux/workqueue.h>
-#include <net/scm.h>
-#include <net/tcp_states.h>
-#include <net/ip.h>
-
-#include <linux/smb_fs.h>
-#include <linux/smb.h>
-#include <linux/smbno.h>
-
-#include <asm/uaccess.h>
-#include <asm/ioctls.h>
-
-#include "smb_debug.h"
-#include "proto.h"
-#include "request.h"
-
-
-static int
-_recvfrom(struct socket *socket, unsigned char *ubuf, int size, unsigned flags)
-{
-	struct kvec iov = {ubuf, size};
-	struct msghdr msg = {.msg_flags = flags};
-	msg.msg_flags |= MSG_DONTWAIT | MSG_NOSIGNAL;
-	return kernel_recvmsg(socket, &msg, &iov, 1, size, msg.msg_flags);
-}
-
-/*
- * Return the server this socket belongs to
- */
-static struct smb_sb_info *
-server_from_socket(struct socket *socket)
-{
-	return socket->sk->sk_user_data;
-}
-
-/*
- * Called when there is data on the socket.
- */
-void
-smb_data_ready(struct sock *sk, int len)
-{
-	struct smb_sb_info *server = server_from_socket(sk->sk_socket);
-	void (*data_ready)(struct sock *, int) = server->data_ready;
-
-	data_ready(sk, len);
-	VERBOSE("(%p, %d)\n", sk, len);
-	smbiod_wake_up();
-}
-
-int
-smb_valid_socket(struct inode * inode)
-{
-	return (inode && S_ISSOCK(inode->i_mode) && 
-		SOCKET_I(inode)->type == SOCK_STREAM);
-}
-
-static struct socket *
-server_sock(struct smb_sb_info *server)
-{
-	struct file *file;
-
-	if (server && (file = server->sock_file))
-	{
-#ifdef SMBFS_PARANOIA
-		if (!smb_valid_socket(file->f_path.dentry->d_inode))
-			PARANOIA("bad socket!\n");
-#endif
-		return SOCKET_I(file->f_path.dentry->d_inode);
-	}
-	return NULL;
-}
-
-void
-smb_close_socket(struct smb_sb_info *server)
-{
-	struct file * file = server->sock_file;
-
-	if (file) {
-		struct socket *sock = server_sock(server);
-
-		VERBOSE("closing socket %p\n", sock);
-		sock->sk->sk_data_ready = server->data_ready;
-		server->sock_file = NULL;
-		fput(file);
-	}
-}
-
-static int
-smb_get_length(struct socket *socket, unsigned char *header)
-{
-	int result;
-
-	result = _recvfrom(socket, header, 4, MSG_PEEK);
-	if (result == -EAGAIN)
-		return -ENODATA;
-	if (result < 0) {
-		PARANOIA("recv error = %d\n", -result);
-		return result;
-	}
-	if (result < 4)
-		return -ENODATA;
-
-	switch (header[0]) {
-	case 0x00:
-	case 0x82:
-		break;
-
-	case 0x85:
-		DEBUG1("Got SESSION KEEP ALIVE\n");
-		_recvfrom(socket, header, 4, 0);	/* read away */
-		return -ENODATA;
-
-	default:
-		PARANOIA("Invalid NBT packet, code=%x\n", header[0]);
-		return -EIO;
-	}
-
-	/* The length in the RFC NB header is the raw data length */
-	return smb_len(header);
-}
-
-int
-smb_recv_available(struct smb_sb_info *server)
-{
-	mm_segment_t oldfs;
-	int avail, err;
-	struct socket *sock = server_sock(server);
-
-	oldfs = get_fs();
-	set_fs(get_ds());
-	err = sock->ops->ioctl(sock, SIOCINQ, (unsigned long) &avail);
-	set_fs(oldfs);
-	return (err >= 0) ? avail : err;
-}
-
-/*
- * Adjust the kvec to move on 'n' bytes (from nfs/sunrpc)
- */
-static int
-smb_move_iov(struct kvec **data, size_t *num, struct kvec *vec, unsigned amount)
-{
-	struct kvec *iv = *data;
-	int i;
-	int len;
-
-	/*
-	 *	Eat any sent kvecs
-	 */
-	while (iv->iov_len <= amount) {
-		amount -= iv->iov_len;
-		iv++;
-		(*num)--;
-	}
-
-	/*
-	 *	And chew down the partial one
-	 */
-	vec[0].iov_len = iv->iov_len-amount;
-	vec[0].iov_base =((unsigned char *)iv->iov_base)+amount;
-	iv++;
-
-	len = vec[0].iov_len;
-
-	/*
-	 *	And copy any others
-	 */
-	for (i = 1; i < *num; i++) {
-		vec[i] = *iv++;
-		len += vec[i].iov_len;
-	}
-
-	*data = vec;
-	return len;
-}
-
-/*
- * smb_receive_header
- * Only called by the smbiod thread.
- */
-int
-smb_receive_header(struct smb_sb_info *server)
-{
-	struct socket *sock;
-	int result = 0;
-	unsigned char peek_buf[4];
-
-	result = -EIO; 
-	sock = server_sock(server);
-	if (!sock)
-		goto out;
-	if (sock->sk->sk_state != TCP_ESTABLISHED)
-		goto out;
-
-	if (!server->smb_read) {
-		result = smb_get_length(sock, peek_buf);
-		if (result < 0) {
-			if (result == -ENODATA)
-				result = 0;
-			goto out;
-		}
-		server->smb_len = result + 4;
-
-		if (server->smb_len < SMB_HEADER_LEN) {
-			PARANOIA("short packet: %d\n", result);
-			server->rstate = SMB_RECV_DROP;
-			result = -EIO;
-			goto out;
-		}
-		if (server->smb_len > SMB_MAX_PACKET_SIZE) {
-			PARANOIA("long packet: %d\n", result);
-			server->rstate = SMB_RECV_DROP;
-			result = -EIO;
-			goto out;
-		}
-	}
-
-	result = _recvfrom(sock, server->header + server->smb_read,
-			   SMB_HEADER_LEN - server->smb_read, 0);
-	VERBOSE("_recvfrom: %d\n", result);
-	if (result < 0) {
-		VERBOSE("receive error: %d\n", result);
-		goto out;
-	}
-	server->smb_read += result;
-
-	if (server->smb_read == SMB_HEADER_LEN)
-		server->rstate = SMB_RECV_HCOMPLETE;
-out:
-	return result;
-}
-
-static char drop_buffer[PAGE_SIZE];
-
-/*
- * smb_receive_drop - read and throw away the data
- * Only called by the smbiod thread.
- *
- * FIXME: we are in the kernel, could we just tell the socket that we want
- * to drop stuff from the buffer?
- */
-int
-smb_receive_drop(struct smb_sb_info *server)
-{
-	struct socket *sock;
-	unsigned int flags;
-	struct kvec iov;
-	struct msghdr msg;
-	int rlen = smb_len(server->header) - server->smb_read + 4;
-	int result = -EIO;
-
-	if (rlen > PAGE_SIZE)
-		rlen = PAGE_SIZE;
-
-	sock = server_sock(server);
-	if (!sock)
-		goto out;
-	if (sock->sk->sk_state != TCP_ESTABLISHED)
-		goto out;
-
-	flags = MSG_DONTWAIT | MSG_NOSIGNAL;
-	iov.iov_base = drop_buffer;
-	iov.iov_len = PAGE_SIZE;
-	msg.msg_flags = flags;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_control = NULL;
-
-	result = kernel_recvmsg(sock, &msg, &iov, 1, rlen, flags);
-
-	VERBOSE("read: %d\n", result);
-	if (result < 0) {
-		VERBOSE("receive error: %d\n", result);
-		goto out;
-	}
-	server->smb_read += result;
-
-	if (server->smb_read >= server->smb_len)
-		server->rstate = SMB_RECV_END;
-
-out:
-	return result;
-}
-
-/*
- * smb_receive
- * Only called by the smbiod thread.
- */
-int
-smb_receive(struct smb_sb_info *server, struct smb_request *req)
-{
-	struct socket *sock;
-	unsigned int flags;
-	struct kvec iov[4];
-	struct kvec *p = req->rq_iov;
-	size_t num = req->rq_iovlen;
-	struct msghdr msg;
-	int rlen;
-	int result = -EIO;
-
-	sock = server_sock(server);
-	if (!sock)
-		goto out;
-	if (sock->sk->sk_state != TCP_ESTABLISHED)
-		goto out;
-
-	flags = MSG_DONTWAIT | MSG_NOSIGNAL;
-	msg.msg_flags = flags;
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_control = NULL;
-
-	/* Dont repeat bytes and count available bufferspace */
-	rlen = min_t(int, smb_move_iov(&p, &num, iov, req->rq_bytes_recvd),
-			(req->rq_rlen - req->rq_bytes_recvd));
-
-	result = kernel_recvmsg(sock, &msg, p, num, rlen, flags);
-
-	VERBOSE("read: %d\n", result);
-	if (result < 0) {
-		VERBOSE("receive error: %d\n", result);
-		goto out;
-	}
-	req->rq_bytes_recvd += result;
-	server->smb_read += result;
-
-out:
-	return result;
-}
-
-/*
- * Try to send a SMB request. This may return after sending only parts of the
- * request. SMB_REQ_TRANSMITTED will be set if a request was fully sent.
- *
- * Parts of this was taken from xprt_sendmsg from net/sunrpc/xprt.c
- */
-int
-smb_send_request(struct smb_request *req)
-{
-	struct smb_sb_info *server = req->rq_server;
-	struct socket *sock;
-	struct msghdr msg = {.msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT};
-        int slen = req->rq_slen - req->rq_bytes_sent;
-	int result = -EIO;
-	struct kvec iov[4];
-	struct kvec *p = req->rq_iov;
-	size_t num = req->rq_iovlen;
-
-	sock = server_sock(server);
-	if (!sock)
-		goto out;
-	if (sock->sk->sk_state != TCP_ESTABLISHED)
-		goto out;
-
-	/* Dont repeat bytes */
-	if (req->rq_bytes_sent)
-		smb_move_iov(&p, &num, iov, req->rq_bytes_sent);
-
-	result = kernel_sendmsg(sock, &msg, p, num, slen);
-
-	if (result >= 0) {
-		req->rq_bytes_sent += result;
-		if (req->rq_bytes_sent >= req->rq_slen)
-			req->rq_flags |= SMB_REQ_TRANSMITTED;
-	}
-out:
-	return result;
-}
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-19 21:45:59 +0000