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Diffstat (limited to 'fs/9p/trans_sock.c')
-rw-r--r--fs/9p/trans_sock.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/fs/9p/trans_sock.c b/fs/9p/trans_sock.c
deleted file mode 100644
index 44e830697acb..000000000000
--- a/fs/9p/trans_sock.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
- * linux/fs/9p/trans_socket.c
- *
- * Socket Transport Layer
- *
- * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net>
- * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
- * Copyright (C) 1997-2002 by Ron Minnich <rminnich@sarnoff.com>
- * Copyright (C) 1995, 1996 by Olaf Kirch <okir@monad.swb.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to:
- * Free Software Foundation
- * 51 Franklin Street, Fifth Floor
- * Boston, MA 02111-1301 USA
- *
- */
-
-#include <linux/config.h>
-#include <linux/in.h>
-#include <linux/module.h>
-#include <linux/net.h>
-#include <linux/ipv6.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/un.h>
-#include <asm/uaccess.h>
-#include <linux/inet.h>
-#include <linux/idr.h>
-#include <linux/file.h>
-
-#include "debug.h"
-#include "v9fs.h"
-#include "transport.h"
-
-#define V9FS_PORT 564
-
-struct v9fs_trans_sock {
- struct socket *s;
- struct file *filp;
-};
-
-/**
- * v9fs_sock_recv - receive from a socket
- * @v9ses: session information
- * @v: buffer to receive data into
- * @len: size of receive buffer
- *
- */
-
-static int v9fs_sock_recv(struct v9fs_transport *trans, void *v, int len)
-{
- int ret;
- struct v9fs_trans_sock *ts;
-
- if (!trans || trans->status == Disconnected) {
- dprintk(DEBUG_ERROR, "disconnected ...\n");
- return -EREMOTEIO;
- }
-
- ts = trans->priv;
-
- if (!(ts->filp->f_flags & O_NONBLOCK))
- dprintk(DEBUG_ERROR, "blocking read ...\n");
-
- ret = kernel_read(ts->filp, ts->filp->f_pos, v, len);
- if (ret <= 0) {
- if (ret != -ERESTARTSYS && ret != -EAGAIN)
- trans->status = Disconnected;
- }
-
- return ret;
-}
-
-/**
- * v9fs_sock_send - send to a socket
- * @v9ses: session information
- * @v: buffer to send data from
- * @len: size of send buffer
- *
- */
-
-static int v9fs_sock_send(struct v9fs_transport *trans, void *v, int len)
-{
- int ret;
- mm_segment_t oldfs;
- struct v9fs_trans_sock *ts;
-
- if (!trans || trans->status == Disconnected) {
- dprintk(DEBUG_ERROR, "disconnected ...\n");
- return -EREMOTEIO;
- }
-
- ts = trans->priv;
- if (!ts) {
- dprintk(DEBUG_ERROR, "no transport ...\n");
- return -EREMOTEIO;
- }
-
- if (!(ts->filp->f_flags & O_NONBLOCK))
- dprintk(DEBUG_ERROR, "blocking write ...\n");
-
- oldfs = get_fs();
- set_fs(get_ds());
- ret = vfs_write(ts->filp, (void __user *)v, len, &ts->filp->f_pos);
- set_fs(oldfs);
-
- if (ret < 0) {
- if (ret != -ERESTARTSYS)
- trans->status = Disconnected;
- }
-
- return ret;
-}
-
-static unsigned int v9fs_sock_poll(struct v9fs_transport *trans,
- struct poll_table_struct *pt) {
-
- int ret;
- struct v9fs_trans_sock *ts;
- mm_segment_t oldfs;
-
- if (!trans) {
- dprintk(DEBUG_ERROR, "no transport\n");
- return -EIO;
- }
-
- ts = trans->priv;
- if (trans->status != Connected || !ts) {
- dprintk(DEBUG_ERROR, "transport disconnected: %d\n", trans->status);
- return -EIO;
- }
-
- oldfs = get_fs();
- set_fs(get_ds());
-
- if (!ts->filp->f_op || !ts->filp->f_op->poll) {
- dprintk(DEBUG_ERROR, "no poll operation\n");
- ret = -EIO;
- goto end;
- }
-
- ret = ts->filp->f_op->poll(ts->filp, pt);
-
-end:
- set_fs(oldfs);
- return ret;
-}
-
-
-/**
- * v9fs_tcp_init - initialize TCP socket
- * @v9ses: session information
- * @addr: address of server to mount
- * @data: mount options
- *
- */
-
-static int
-v9fs_tcp_init(struct v9fs_session_info *v9ses, const char *addr, char *data)
-{
- struct socket *csocket = NULL;
- struct sockaddr_in sin_server;
- int rc = 0;
- struct v9fs_trans_sock *ts = NULL;
- struct v9fs_transport *trans = v9ses->transport;
- int fd;
-
- trans->status = Disconnected;
-
- ts = kmalloc(sizeof(struct v9fs_trans_sock), GFP_KERNEL);
-
- if (!ts)
- return -ENOMEM;
-
- trans->priv = ts;
- ts->s = NULL;
- ts->filp = NULL;
-
- if (!addr)
- return -EINVAL;
-
- dprintk(DEBUG_TRANS, "Connecting to %s\n", addr);
-
- sin_server.sin_family = AF_INET;
- sin_server.sin_addr.s_addr = in_aton(addr);
- sin_server.sin_port = htons(v9ses->port);
- sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &csocket);
- rc = csocket->ops->connect(csocket,
- (struct sockaddr *)&sin_server,
- sizeof(struct sockaddr_in), 0);
- if (rc < 0) {
- eprintk(KERN_ERR,
- "v9fs_trans_tcp: problem connecting socket to %s\n",
- addr);
- return rc;
- }
- csocket->sk->sk_allocation = GFP_NOIO;
-
- fd = sock_map_fd(csocket);
- if (fd < 0) {
- sock_release(csocket);
- kfree(ts);
- trans->priv = NULL;
- return fd;
- }
-
- ts->s = csocket;
- ts->filp = fget(fd);
- ts->filp->f_flags |= O_NONBLOCK;
- trans->status = Connected;
-
- return 0;
-}
-
-/**
- * v9fs_unix_init - initialize UNIX domain socket
- * @v9ses: session information
- * @dev_name: path to named pipe
- * @data: mount options
- *
- */
-
-static int
-v9fs_unix_init(struct v9fs_session_info *v9ses, const char *dev_name,
- char *data)
-{
- int rc, fd;
- struct socket *csocket;
- struct sockaddr_un sun_server;
- struct v9fs_transport *trans;
- struct v9fs_trans_sock *ts;
-
- rc = 0;
- csocket = NULL;
- trans = v9ses->transport;
-
- trans->status = Disconnected;
-
- if (strlen(dev_name) > UNIX_PATH_MAX) {
- eprintk(KERN_ERR, "v9fs_trans_unix: address too long: %s\n",
- dev_name);
- return -ENOMEM;
- }
-
- ts = kmalloc(sizeof(struct v9fs_trans_sock), GFP_KERNEL);
- if (!ts)
- return -ENOMEM;
-
- trans->priv = ts;
- ts->s = NULL;
- ts->filp = NULL;
-
- sun_server.sun_family = PF_UNIX;
- strcpy(sun_server.sun_path, dev_name);
- sock_create_kern(PF_UNIX, SOCK_STREAM, 0, &csocket);
- rc = csocket->ops->connect(csocket, (struct sockaddr *)&sun_server,
- sizeof(struct sockaddr_un) - 1, 0); /* -1 *is* important */
- if (rc < 0) {
- eprintk(KERN_ERR,
- "v9fs_trans_unix: problem connecting socket: %s: %d\n",
- dev_name, rc);
- return rc;
- }
- csocket->sk->sk_allocation = GFP_NOIO;
-
- fd = sock_map_fd(csocket);
- if (fd < 0) {
- sock_release(csocket);
- kfree(ts);
- trans->priv = NULL;
- return fd;
- }
-
- ts->s = csocket;
- ts->filp = fget(fd);
- ts->filp->f_flags |= O_NONBLOCK;
- trans->status = Connected;
-
- return 0;
-}
-
-/**
- * v9fs_sock_close - shutdown socket
- * @trans: private socket structure
- *
- */
-
-static void v9fs_sock_close(struct v9fs_transport *trans)
-{
- struct v9fs_trans_sock *ts;
-
- if (!trans)
- return;
-
- ts = trans->priv;
-
- if ((ts) && (ts->filp)) {
- fput(ts->filp);
- ts->filp = NULL;
- ts->s = NULL;
- trans->status = Disconnected;
- }
-
- kfree(ts);
-
- trans->priv = NULL;
-}
-
-struct v9fs_transport v9fs_trans_tcp = {
- .init = v9fs_tcp_init,
- .write = v9fs_sock_send,
- .read = v9fs_sock_recv,
- .close = v9fs_sock_close,
- .poll = v9fs_sock_poll,
-};
-
-struct v9fs_transport v9fs_trans_unix = {
- .init = v9fs_unix_init,
- .write = v9fs_sock_send,
- .read = v9fs_sock_recv,
- .close = v9fs_sock_close,
- .poll = v9fs_sock_poll,
-};
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-29 10:06:13 +0000