Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

fs/ncpfs/Kconfig

@@ -0,0 +1,87 @@
+#
+# NCP Filesystem configuration
+#
+config NCPFS_PACKET_SIGNING
+	bool "Packet signatures"
+	depends on NCP_FS
+	help
+	  NCP allows packets to be signed for stronger security. If you want
+	  security, say Y.  Normal users can leave it off.  To be able to use
+	  packet signing you must use ncpfs > 2.0.12.
+
+config NCPFS_IOCTL_LOCKING
+	bool "Proprietary file locking"
+	depends on NCP_FS
+	help
+	  Allows locking of records on remote volumes.  Say N unless you have
+	  special applications which are able to utilize this locking scheme.
+
+config NCPFS_STRONG
+	bool "Clear remove/delete inhibit when needed"
+	depends on NCP_FS
+	help
+	  Allows manipulation of files flagged as Delete or Rename Inhibit.
+	  To use this feature you must mount volumes with the ncpmount
+	  parameter "-s" (ncpfs-2.0.12 and newer).  Say Y unless you are not
+	  mounting volumes with -f 444.
+
+config NCPFS_NFS_NS
+	bool "Use NFS namespace if available"
+	depends on NCP_FS
+	help
+	  Allows you to utilize NFS namespace on NetWare servers.  It brings
+	  you case sensitive filenames.  Say Y.  You can disable it at
+	  mount-time with the `-N nfs' parameter of ncpmount.
+
+config NCPFS_OS2_NS
+	bool "Use LONG (OS/2) namespace if available"
+	depends on NCP_FS
+	help
+	  Allows you to utilize OS2/LONG namespace on NetWare servers.
+	  Filenames in this namespace are limited to 255 characters, they are
+	  case insensitive, and case in names is preserved.  Say Y.  You can
+	  disable it at mount time with the -N os2 parameter of ncpmount.
+
+config NCPFS_SMALLDOS
+	bool "Lowercase DOS filenames"
+	depends on NCP_FS
+	---help---
+	  If you say Y here, every filename on a NetWare server volume using
+	  the OS2/LONG namespace and created under DOS or on a volume using
+	  DOS namespace will be converted to lowercase characters.
+	  Saying N here will give you these filenames in uppercase.
+
+	  This is only a cosmetic option since the OS2/LONG namespace is case
+	  insensitive. The only major reason for this option is backward
+	  compatibility when moving from DOS to OS2/LONG namespace support.
+	  Long filenames (created by Win95) will not be affected.
+
+	  This option does not solve the problem that filenames appear
+	  differently under Linux and under Windows, since Windows does an
+	  additional conversions on the client side. You can achieve similar
+	  effects by saying Y to "Allow using of Native Language Support"
+	  below.
+
+config NCPFS_NLS
+	bool "Use Native Language Support"
+	depends on NCP_FS
+	select NLS
+	help
+	  Allows you to use codepages and I/O charsets for file name
+	  translation between the server file system and input/output. This
+	  may be useful, if you want to access the server with other operating
+	  systems, e.g. Windows 95. See also NLS for more Information.
+
+	  To select codepages and I/O charsets use ncpfs-2.2.0.13 or newer.
+
+config NCPFS_EXTRAS
+	bool "Enable symbolic links and execute flags"
+	depends on NCP_FS
+	help
+	  This enables the use of symbolic links and an execute permission
+	  bit on NCPFS. The file server need not have long name space or NFS
+	  name space loaded for these to work.
+
+	  To use the new attributes, it is recommended to use the flags
+	  '-f 600 -d 755' on the ncpmount command line.
+

fs/ncpfs/Makefile

@@ -0,0 +1,16 @@
+#
+# Makefile for the linux ncp filesystem routines.
+#
+
+obj-$(CONFIG_NCP_FS) += ncpfs.o
+
+ncpfs-y      := dir.o file.o inode.o ioctl.o mmap.o ncplib_kernel.o sock.o \
+		ncpsign_kernel.o getopt.o
+
+ncpfs-$(CONFIG_NCPFS_EXTRAS)   += symlink.o
+ncpfs-$(CONFIG_NCPFS_NFS_NS)   += symlink.o
+
+# If you want debugging output, please uncomment the following line
+# EXTRA_CFLAGS += -DDEBUG_NCP=1
+
+CFLAGS_ncplib_kernel.o := -finline-functions

fs/ncpfs/file.c

@@ -0,0 +1,300 @@
+/*
+ *  file.c
+ *
+ *  Copyright (C) 1995, 1996 by Volker Lendecke
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *
+ */
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/smp_lock.h>
+
+#include <linux/ncp_fs.h>
+#include "ncplib_kernel.h"
+
+static int ncp_fsync(struct file *file, struct dentry *dentry, int datasync)
+{
+	return 0;
+}
+
+/*
+ * Open a file with the specified read/write mode.
+ */
+int ncp_make_open(struct inode *inode, int right)
+{
+	int error;
+	int access;
+
+	error = -EINVAL;
+	if (!inode) {
+		printk(KERN_ERR "ncp_make_open: got NULL inode\n");
+		goto out;
+	}
+
+	DPRINTK("ncp_make_open: opened=%d, volume # %u, dir entry # %u\n",
+		atomic_read(&NCP_FINFO(inode)->opened), 
+		NCP_FINFO(inode)->volNumber, 
+		NCP_FINFO(inode)->dirEntNum);
+	error = -EACCES;
+	down(&NCP_FINFO(inode)->open_sem);
+	if (!atomic_read(&NCP_FINFO(inode)->opened)) {
+		struct ncp_entry_info finfo;
+		int result;
+
+		/* tries max. rights */
+		finfo.access = O_RDWR;
+		result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+					inode, NULL, OC_MODE_OPEN,
+					0, AR_READ | AR_WRITE, &finfo);
+		if (!result)
+			goto update;
+		/* RDWR did not succeeded, try readonly or writeonly as requested */
+		switch (right) {
+			case O_RDONLY:
+				finfo.access = O_RDONLY;
+				result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+					inode, NULL, OC_MODE_OPEN,
+					0, AR_READ, &finfo);
+				break;
+			case O_WRONLY:
+				finfo.access = O_WRONLY;
+				result = ncp_open_create_file_or_subdir(NCP_SERVER(inode),
+					inode, NULL, OC_MODE_OPEN,
+					0, AR_WRITE, &finfo);
+				break;
+		}
+		if (result) {
+			PPRINTK("ncp_make_open: failed, result=%d\n", result);
+			goto out_unlock;
+		}
+		/*
+		 * Update the inode information.
+		 */
+	update:
+		ncp_update_inode(inode, &finfo);
+		atomic_set(&NCP_FINFO(inode)->opened, 1);
+	}
+
+	access = NCP_FINFO(inode)->access;
+	PPRINTK("ncp_make_open: file open, access=%x\n", access);
+	if (access == right || access == O_RDWR) {
+		atomic_inc(&NCP_FINFO(inode)->opened);
+		error = 0;
+	}
+
+out_unlock:
+	up(&NCP_FINFO(inode)->open_sem);
+out:
+	return error;
+}
+
+static ssize_t
+ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+	struct dentry *dentry = file->f_dentry;
+	struct inode *inode = dentry->d_inode;
+	size_t already_read = 0;
+	off_t pos;
+	size_t bufsize;
+	int error;
+	void* freepage;
+	size_t freelen;
+
+	DPRINTK("ncp_file_read: enter %s/%s\n",
+		dentry->d_parent->d_name.name, dentry->d_name.name);
+
+	if (!ncp_conn_valid(NCP_SERVER(inode)))
+		return -EIO;
+
+	pos = *ppos;
+
+	if ((ssize_t) count < 0) {
+		return -EINVAL;
+	}
+	if (!count)
+		return 0;
+	if (pos > inode->i_sb->s_maxbytes)
+		return 0;
+	if (pos + count > inode->i_sb->s_maxbytes) {
+		count = inode->i_sb->s_maxbytes - pos;
+	}
+
+	error = ncp_make_open(inode, O_RDONLY);
+	if (error) {
+		DPRINTK(KERN_ERR "ncp_file_read: open failed, error=%d\n", error);
+		return error;
+	}
+
+	bufsize = NCP_SERVER(inode)->buffer_size;
+
+	error = -EIO;
+	freelen = ncp_read_bounce_size(bufsize);
+	freepage = vmalloc(freelen);
+	if (!freepage)
+		goto outrel;
+	error = 0;
+	/* First read in as much as possible for each bufsize. */
+	while (already_read < count) {
+		int read_this_time;
+		size_t to_read = min_t(unsigned int,
+				     bufsize - (pos % bufsize),
+				     count - already_read);
+
+		error = ncp_read_bounce(NCP_SERVER(inode),
+			 	NCP_FINFO(inode)->file_handle,
+				pos, to_read, buf, &read_this_time, 
+				freepage, freelen);
+		if (error) {
+			error = -EIO;	/* NW errno -> Linux errno */
+			break;
+		}
+		pos += read_this_time;
+		buf += read_this_time;
+		already_read += read_this_time;
+
+		if (read_this_time != to_read) {
+			break;
+		}
+	}
+	vfree(freepage);
+
+	*ppos = pos;
+
+	file_accessed(file);
+
+	DPRINTK("ncp_file_read: exit %s/%s\n",
+		dentry->d_parent->d_name.name, dentry->d_name.name);
+outrel:
+	ncp_inode_close(inode);		
+	return already_read ? already_read : error;
+}
+
+static ssize_t
+ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+{
+	struct dentry *dentry = file->f_dentry;
+	struct inode *inode = dentry->d_inode;
+	size_t already_written = 0;
+	off_t pos;
+	size_t bufsize;
+	int errno;
+	void* bouncebuffer;
+
+	DPRINTK("ncp_file_write: enter %s/%s\n",
+		dentry->d_parent->d_name.name, dentry->d_name.name);
+	if (!ncp_conn_valid(NCP_SERVER(inode)))
+		return -EIO;
+	if ((ssize_t) count < 0)
+		return -EINVAL;
+	pos = *ppos;
+	if (file->f_flags & O_APPEND) {
+		pos = inode->i_size;
+	}
+
+	if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) {
+		if (pos >= MAX_NON_LFS) {
+			send_sig(SIGXFSZ, current, 0);
+			return -EFBIG;
+		}
+		if (count > MAX_NON_LFS - (u32)pos) {
+			count = MAX_NON_LFS - (u32)pos;
+		}
+	}
+	if (pos >= inode->i_sb->s_maxbytes) {
+		if (count || pos > inode->i_sb->s_maxbytes) {
+			send_sig(SIGXFSZ, current, 0);
+			return -EFBIG;
+		}
+	}
+	if (pos + count > inode->i_sb->s_maxbytes) {
+		count = inode->i_sb->s_maxbytes - pos;
+	}
+	
+	if (!count)
+		return 0;
+	errno = ncp_make_open(inode, O_WRONLY);
+	if (errno) {
+		DPRINTK(KERN_ERR "ncp_file_write: open failed, error=%d\n", errno);
+		return errno;
+	}
+	bufsize = NCP_SERVER(inode)->buffer_size;
+
+	already_written = 0;
+
+	bouncebuffer = vmalloc(bufsize);
+	if (!bouncebuffer) {
+		errno = -EIO;	/* -ENOMEM */
+		goto outrel;
+	}
+	while (already_written < count) {
+		int written_this_time;
+		size_t to_write = min_t(unsigned int,
+				      bufsize - (pos % bufsize),
+				      count - already_written);
+
+		if (copy_from_user(bouncebuffer, buf, to_write)) {
+			errno = -EFAULT;
+			break;
+		}
+		if (ncp_write_kernel(NCP_SERVER(inode), 
+		    NCP_FINFO(inode)->file_handle,
+		    pos, to_write, bouncebuffer, &written_this_time) != 0) {
+			errno = -EIO;
+			break;
+		}
+		pos += written_this_time;
+		buf += written_this_time;
+		already_written += written_this_time;
+
+		if (written_this_time != to_write) {
+			break;
+		}
+	}
+	vfree(bouncebuffer);
+
+	inode_update_time(inode, 1);
+
+	*ppos = pos;
+
+	if (pos > inode->i_size) {
+		inode->i_size = pos;
+	}
+	DPRINTK("ncp_file_write: exit %s/%s\n",
+		dentry->d_parent->d_name.name, dentry->d_name.name);
+outrel:
+	ncp_inode_close(inode);		
+	return already_written ? already_written : errno;
+}
+
+static int ncp_release(struct inode *inode, struct file *file) {
+	if (ncp_make_closed(inode)) {
+		DPRINTK("ncp_release: failed to close\n");
+	}
+	return 0;
+}
+
+struct file_operations ncp_file_operations =
+{
+	.llseek		= remote_llseek,
+	.read		= ncp_file_read,
+	.write		= ncp_file_write,
+	.ioctl		= ncp_ioctl,
+	.mmap		= ncp_mmap,
+	.release	= ncp_release,
+	.fsync		= ncp_fsync,
+};
+
+struct inode_operations ncp_file_inode_operations =
+{
+	.setattr	= ncp_notify_change,
+};

fs/ncpfs/getopt.c

@@ -0,0 +1,75 @@
+/*
+ * getopt.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/errno.h>
+
+#include "getopt.h"
+
+/**
+ *	ncp_getopt - option parser
+ *	@caller: name of the caller, for error messages
+ *	@options: the options string
+ *	@opts: an array of &struct option entries controlling parser operations
+ *	@optopt: output; will contain the current option
+ *	@optarg: output; will contain the value (if one exists)
+ *	@flag: output; may be NULL; should point to a long for or'ing flags
+ *	@value: output; may be NULL; will be overwritten with the integer value
+ *		of the current argument.
+ *
+ *	Helper to parse options on the format used by mount ("a=b,c=d,e,f").
+ *	Returns opts->val if a matching entry in the 'opts' array is found,
+ *	0 when no more tokens are found, -1 if an error is encountered.
+ */
+int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts,
+	       char **optopt, char **optarg, unsigned long *value)
+{
+	char *token;
+	char *val;
+
+	do {
+		if ((token = strsep(options, ",")) == NULL)
+			return 0;
+	} while (*token == '\0');
+	if (optopt)
+		*optopt = token;
+
+	if ((val = strchr (token, '=')) != NULL) {
+		*val++ = 0;
+	}
+	*optarg = val;
+	for (; opts->name; opts++) {
+		if (!strcmp(opts->name, token)) {
+			if (!val) {
+				if (opts->has_arg & OPT_NOPARAM) {
+					return opts->val;
+				}
+				printk(KERN_INFO "%s: the %s option requires an argument\n",
+				       caller, token);
+				return -EINVAL;
+			}
+			if (opts->has_arg & OPT_INT) {
+				char* v;
+
+				*value = simple_strtoul(val, &v, 0);
+				if (!*v) {
+					return opts->val;
+				}
+				printk(KERN_INFO "%s: invalid numeric value in %s=%s\n",
+					caller, token, val);
+				return -EDOM;
+			}
+			if (opts->has_arg & OPT_STRING) {
+				return opts->val;
+			}
+			printk(KERN_INFO "%s: unexpected argument %s to the %s option\n",
+				caller, val, token);
+			return -EINVAL;
+		}
+	}
+	printk(KERN_INFO "%s: Unrecognized mount option %s\n", caller, token);
+	return -EOPNOTSUPP;
+}

fs/ncpfs/getopt.h

@@ -0,0 +1,16 @@
+#ifndef _LINUX_GETOPT_H
+#define _LINUX_GETOPT_H
+
+#define OPT_NOPARAM	1
+#define OPT_INT		2
+#define OPT_STRING	4
+struct ncp_option {
+	const char *name;
+	unsigned int has_arg;
+	int val;
+};
+
+extern int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts,
+		      char **optopt, char **optarg, unsigned long *value);
+
+#endif /* _LINUX_GETOPT_H */

fs/ncpfs/ioctl.c

@@ -0,0 +1,649 @@
+/*
+ *  ioctl.c
+ *
+ *  Copyright (C) 1995, 1996 by Volker Lendecke
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *  Modified 1998, 1999 Wolfram Pienkoss for NLS
+ *
+ */
+
+#include <linux/config.h>
+
+#include <asm/uaccess.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ioctl.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/highuid.h>
+#include <linux/vmalloc.h>
+
+#include <linux/ncp_fs.h>
+
+#include "ncplib_kernel.h"
+
+/* maximum limit for ncp_objectname_ioctl */
+#define NCP_OBJECT_NAME_MAX_LEN	4096
+/* maximum limit for ncp_privatedata_ioctl */
+#define NCP_PRIVATE_DATA_MAX_LEN 8192
+/* maximum negotiable packet size */
+#define NCP_PACKET_SIZE_INTERNAL 65536
+
+static int
+ncp_get_fs_info(struct ncp_server* server, struct inode* inode, struct ncp_fs_info __user *arg)
+{
+	struct ncp_fs_info info;
+
+	if ((permission(inode, MAY_WRITE, NULL) != 0)
+	    && (current->uid != server->m.mounted_uid)) {
+		return -EACCES;
+	}
+	if (copy_from_user(&info, arg, sizeof(info)))
+		return -EFAULT;
+
+	if (info.version != NCP_GET_FS_INFO_VERSION) {
+		DPRINTK("info.version invalid: %d\n", info.version);
+		return -EINVAL;
+	}
+	/* TODO: info.addr = server->m.serv_addr; */
+	SET_UID(info.mounted_uid, server->m.mounted_uid);
+	info.connection		= server->connection;
+	info.buffer_size	= server->buffer_size;
+	info.volume_number	= NCP_FINFO(inode)->volNumber;
+	info.directory_id	= NCP_FINFO(inode)->DosDirNum;
+
+	if (copy_to_user(arg, &info, sizeof(info)))
+		return -EFAULT;
+	return 0;
+}
+
+static int
+ncp_get_fs_info_v2(struct ncp_server* server, struct inode* inode, struct ncp_fs_info_v2 __user * arg)
+{
+	struct ncp_fs_info_v2 info2;
+
+	if ((permission(inode, MAY_WRITE, NULL) != 0)
+	    && (current->uid != server->m.mounted_uid)) {
+		return -EACCES;
+	}
+	if (copy_from_user(&info2, arg, sizeof(info2)))
+		return -EFAULT;
+
+	if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
+		DPRINTK("info.version invalid: %d\n", info2.version);
+		return -EINVAL;
+	}
+	info2.mounted_uid   = server->m.mounted_uid;
+	info2.connection    = server->connection;
+	info2.buffer_size   = server->buffer_size;
+	info2.volume_number = NCP_FINFO(inode)->volNumber;
+	info2.directory_id  = NCP_FINFO(inode)->DosDirNum;
+	info2.dummy1 = info2.dummy2 = info2.dummy3 = 0;
+
+	if (copy_to_user(arg, &info2, sizeof(info2)))
+		return -EFAULT;
+	return 0;
+}
+
+#ifdef CONFIG_NCPFS_NLS
+/* Here we are select the iocharset and the codepage for NLS.
+ * Thanks Petr Vandrovec for idea and many hints.
+ */
+static int
+ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
+{
+	struct ncp_nls_ioctl user;
+	struct nls_table *codepage;
+	struct nls_table *iocharset;
+	struct nls_table *oldset_io;
+	struct nls_table *oldset_cp;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+	if (server->root_setuped)
+		return -EBUSY;
+
+	if (copy_from_user(&user, arg, sizeof(user)))
+		return -EFAULT;
+
+	codepage = NULL;
+	user.codepage[NCP_IOCSNAME_LEN] = 0;
+	if (!user.codepage[0] || !strcmp(user.codepage, "default"))
+		codepage = load_nls_default();
+	else {
+		codepage = load_nls(user.codepage);
+		if (!codepage) {
+			return -EBADRQC;
+		}
+	}
+
+	iocharset = NULL;
+	user.iocharset[NCP_IOCSNAME_LEN] = 0;
+	if (!user.iocharset[0] || !strcmp(user.iocharset, "default")) {
+		iocharset = load_nls_default();
+		NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
+	} else if (!strcmp(user.iocharset, "utf8")) {
+		iocharset = load_nls_default();
+		NCP_SET_FLAG(server, NCP_FLAG_UTF8);
+	} else {
+		iocharset = load_nls(user.iocharset);
+		if (!iocharset) {
+			unload_nls(codepage);
+			return -EBADRQC;
+		}
+		NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
+	}
+
+	oldset_cp = server->nls_vol;
+	server->nls_vol = codepage;
+	oldset_io = server->nls_io;
+	server->nls_io = iocharset;
+
+	if (oldset_cp)
+		unload_nls(oldset_cp);
+	if (oldset_io)
+		unload_nls(oldset_io);
+
+	return 0;
+}
+
+static int
+ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
+{
+	struct ncp_nls_ioctl user;
+	int len;
+
+	memset(&user, 0, sizeof(user));
+	if (server->nls_vol && server->nls_vol->charset) {
+		len = strlen(server->nls_vol->charset);
+		if (len > NCP_IOCSNAME_LEN)
+			len = NCP_IOCSNAME_LEN;
+		strncpy(user.codepage, server->nls_vol->charset, len);
+		user.codepage[len] = 0;
+	}
+
+	if (NCP_IS_FLAG(server, NCP_FLAG_UTF8))
+		strcpy(user.iocharset, "utf8");
+	else if (server->nls_io && server->nls_io->charset) {
+		len = strlen(server->nls_io->charset);
+		if (len > NCP_IOCSNAME_LEN)
+			len = NCP_IOCSNAME_LEN;
+		strncpy(user.iocharset,	server->nls_io->charset, len);
+		user.iocharset[len] = 0;
+	}
+
+	if (copy_to_user(arg, &user, sizeof(user)))
+		return -EFAULT;
+	return 0;
+}
+#endif /* CONFIG_NCPFS_NLS */
+
+int ncp_ioctl(struct inode *inode, struct file *filp,
+	      unsigned int cmd, unsigned long arg)
+{
+	struct ncp_server *server = NCP_SERVER(inode);
+	int result;
+	struct ncp_ioctl_request request;
+	char* bouncebuffer;
+	void __user *argp = (void __user *)arg;
+
+	switch (cmd) {
+	case NCP_IOC_NCPREQUEST:
+
+		if ((permission(inode, MAY_WRITE, NULL) != 0)
+		    && (current->uid != server->m.mounted_uid)) {
+			return -EACCES;
+		}
+		if (copy_from_user(&request, argp, sizeof(request)))
+			return -EFAULT;
+
+		if ((request.function > 255)
+		    || (request.size >
+		  NCP_PACKET_SIZE - sizeof(struct ncp_request_header))) {
+			return -EINVAL;
+		}
+		bouncebuffer = vmalloc(NCP_PACKET_SIZE_INTERNAL);
+		if (!bouncebuffer)
+			return -ENOMEM;
+		if (copy_from_user(bouncebuffer, request.data, request.size)) {
+			vfree(bouncebuffer);
+			return -EFAULT;
+		}
+		ncp_lock_server(server);
+
+		/* FIXME: We hack around in the server's structures
+		   here to be able to use ncp_request */
+
+		server->has_subfunction = 0;
+		server->current_size = request.size;
+		memcpy(server->packet, bouncebuffer, request.size);
+
+		result = ncp_request2(server, request.function, 
+			bouncebuffer, NCP_PACKET_SIZE_INTERNAL);
+		if (result < 0)
+			result = -EIO;
+		else
+			result = server->reply_size;
+		ncp_unlock_server(server);
+		DPRINTK("ncp_ioctl: copy %d bytes\n",
+			result);
+		if (result >= 0)
+			if (copy_to_user(request.data, bouncebuffer, result))
+				result = -EFAULT;
+		vfree(bouncebuffer);
+		return result;
+
+	case NCP_IOC_CONN_LOGGED_IN:
+
+		if (!capable(CAP_SYS_ADMIN))
+			return -EACCES;
+		if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE))
+			return -EINVAL;
+		if (server->root_setuped)
+			return -EBUSY;
+		server->root_setuped = 1;
+		return ncp_conn_logged_in(inode->i_sb);
+
+	case NCP_IOC_GET_FS_INFO:
+		return ncp_get_fs_info(server, inode, argp);
+
+	case NCP_IOC_GET_FS_INFO_V2:
+		return ncp_get_fs_info_v2(server, inode, argp);
+
+	case NCP_IOC_GETMOUNTUID2:
+		{
+			unsigned long tmp = server->m.mounted_uid;
+
+			if (   (permission(inode, MAY_READ, NULL) != 0)
+			    && (current->uid != server->m.mounted_uid))
+			{
+				return -EACCES;
+			}
+			if (put_user(tmp, (unsigned long __user *)argp)) 
+				return -EFAULT;
+			return 0;
+		}
+
+	case NCP_IOC_GETROOT:
+		{
+			struct ncp_setroot_ioctl sr;
+
+			if (   (permission(inode, MAY_READ, NULL) != 0)
+			    && (current->uid != server->m.mounted_uid))
+			{
+				return -EACCES;
+			}
+			if (server->m.mounted_vol[0]) {
+				struct dentry* dentry = inode->i_sb->s_root;
+
+				if (dentry) {
+					struct inode* inode = dentry->d_inode;
+				
+					if (inode) {
+						sr.volNumber = NCP_FINFO(inode)->volNumber;
+						sr.dirEntNum = NCP_FINFO(inode)->dirEntNum;
+						sr.namespace = server->name_space[sr.volNumber];
+					} else
+						DPRINTK("ncpfs: s_root->d_inode==NULL\n");
+				} else
+					DPRINTK("ncpfs: s_root==NULL\n");
+			} else {
+				sr.volNumber = -1;
+				sr.namespace = 0;
+				sr.dirEntNum = 0;
+			}
+			if (copy_to_user(argp, &sr, sizeof(sr)))
+				return -EFAULT;
+			return 0;
+		}
+	case NCP_IOC_SETROOT:
+		{
+			struct ncp_setroot_ioctl sr;
+			__u32 vnum;
+			__le32 de;
+			__le32 dosde;
+			struct dentry* dentry;
+
+			if (!capable(CAP_SYS_ADMIN))
+			{
+				return -EACCES;
+			}
+			if (server->root_setuped) return -EBUSY;
+			if (copy_from_user(&sr, argp, sizeof(sr)))
+				return -EFAULT;
+			if (sr.volNumber < 0) {
+				server->m.mounted_vol[0] = 0;
+				vnum = NCP_NUMBER_OF_VOLUMES;
+				de = 0;
+				dosde = 0;
+			} else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
+				return -EINVAL;
+			} else if (ncp_mount_subdir(server, sr.volNumber,
+						sr.namespace, sr.dirEntNum,
+						&vnum, &de, &dosde)) {
+				return -ENOENT;
+			}
+			
+			dentry = inode->i_sb->s_root;
+			server->root_setuped = 1;
+			if (dentry) {
+				struct inode* inode = dentry->d_inode;
+				
+				if (inode) {
+					NCP_FINFO(inode)->volNumber = vnum;
+					NCP_FINFO(inode)->dirEntNum = de;
+					NCP_FINFO(inode)->DosDirNum = dosde;
+				} else
+					DPRINTK("ncpfs: s_root->d_inode==NULL\n");
+			} else
+				DPRINTK("ncpfs: s_root==NULL\n");
+
+			return 0;
+		}
+
+#ifdef CONFIG_NCPFS_PACKET_SIGNING	
+	case NCP_IOC_SIGN_INIT:
+		if ((permission(inode, MAY_WRITE, NULL) != 0)
+		    && (current->uid != server->m.mounted_uid))
+		{
+			return -EACCES;
+		}
+		if (argp) {
+			if (server->sign_wanted)
+			{
+				struct ncp_sign_init sign;
+
+				if (copy_from_user(&sign, argp, sizeof(sign)))
+					return -EFAULT;
+				memcpy(server->sign_root,sign.sign_root,8);
+				memcpy(server->sign_last,sign.sign_last,16);
+				server->sign_active = 1;
+			}
+			/* ignore when signatures not wanted */
+		} else {
+			server->sign_active = 0;
+		}
+		return 0;		
+		
+        case NCP_IOC_SIGN_WANTED:
+		if (   (permission(inode, MAY_READ, NULL) != 0)
+		    && (current->uid != server->m.mounted_uid))
+		{
+			return -EACCES;
+		}
+		
+                if (put_user(server->sign_wanted, (int __user *)argp))
+			return -EFAULT;
+                return 0;
+	case NCP_IOC_SET_SIGN_WANTED:
+		{
+			int newstate;
+
+			if (   (permission(inode, MAY_WRITE, NULL) != 0)
+			    && (current->uid != server->m.mounted_uid))
+			{
+				return -EACCES;
+			}
+			/* get only low 8 bits... */
+			if (get_user(newstate, (unsigned char __user *)argp))
+				return -EFAULT;
+			if (server->sign_active) {
+				/* cannot turn signatures OFF when active */
+				if (!newstate) return -EINVAL;
+			} else {
+				server->sign_wanted = newstate != 0;
+			}
+			return 0;
+		}
+
+#endif /* CONFIG_NCPFS_PACKET_SIGNING */
+
+#ifdef CONFIG_NCPFS_IOCTL_LOCKING
+	case NCP_IOC_LOCKUNLOCK:
+		if (   (permission(inode, MAY_WRITE, NULL) != 0)
+		    && (current->uid != server->m.mounted_uid))
+		{
+			return -EACCES;
+		}
+		{
+			struct ncp_lock_ioctl	 rqdata;
+			int result;
+
+			if (copy_from_user(&rqdata, argp, sizeof(rqdata)))
+				return -EFAULT;
+			if (rqdata.origin != 0)
+				return -EINVAL;
+			/* check for cmd */
+			switch (rqdata.cmd) {
+				case NCP_LOCK_EX:
+				case NCP_LOCK_SH:
+						if (rqdata.timeout == 0)
+							rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
+						else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)
+							rqdata.timeout = NCP_LOCK_MAX_TIMEOUT;
+						break;
+				case NCP_LOCK_LOG:
+						rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;	/* has no effect */
+				case NCP_LOCK_CLEAR:
+						break;
+				default:
+						return -EINVAL;
+			}
+			/* locking needs both read and write access */
+			if ((result = ncp_make_open(inode, O_RDWR)) != 0)
+			{
+				return result;
+			}
+			result = -EIO;
+			if (!ncp_conn_valid(server))
+				goto outrel;
+			result = -EISDIR;
+			if (!S_ISREG(inode->i_mode))
+				goto outrel;
+			if (rqdata.cmd == NCP_LOCK_CLEAR)
+			{
+				result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),
+							NCP_FINFO(inode)->file_handle, 
+							rqdata.offset,
+							rqdata.length);
+				if (result > 0) result = 0;	/* no such lock */
+			}
+			else
+			{
+				int lockcmd;
+
+				switch (rqdata.cmd)
+				{
+					case NCP_LOCK_EX:  lockcmd=1; break;
+					case NCP_LOCK_SH:  lockcmd=3; break;
+					default:	   lockcmd=0; break;
+				}
+				result = ncp_LogPhysicalRecord(NCP_SERVER(inode),
+							NCP_FINFO(inode)->file_handle,
+							lockcmd,
+							rqdata.offset,
+							rqdata.length,
+							rqdata.timeout);
+				if (result > 0) result = -EAGAIN;
+			}
+outrel:			
+			ncp_inode_close(inode);
+			return result;
+		}
+#endif	/* CONFIG_NCPFS_IOCTL_LOCKING */
+
+	case NCP_IOC_GETOBJECTNAME:
+		if (current->uid != server->m.mounted_uid) {
+			return -EACCES;
+		}
+		{
+			struct ncp_objectname_ioctl user;
+			size_t outl;
+
+			if (copy_from_user(&user, argp, sizeof(user)))
+				return -EFAULT;
+			user.auth_type = server->auth.auth_type;
+			outl = user.object_name_len;
+			user.object_name_len = server->auth.object_name_len;
+			if (outl > user.object_name_len)
+				outl = user.object_name_len;
+			if (outl) {
+				if (copy_to_user(user.object_name,
+						 server->auth.object_name,
+						 outl)) return -EFAULT;
+			}
+			if (copy_to_user(argp, &user, sizeof(user)))
+				return -EFAULT;
+			return 0;
+		}
+	case NCP_IOC_SETOBJECTNAME:
+		if (current->uid != server->m.mounted_uid) {
+			return -EACCES;
+		}
+		{
+			struct ncp_objectname_ioctl user;
+			void* newname;
+			void* oldname;
+			size_t oldnamelen;
+			void* oldprivate;
+			size_t oldprivatelen;
+
+			if (copy_from_user(&user, argp, sizeof(user)))
+				return -EFAULT;
+			if (user.object_name_len > NCP_OBJECT_NAME_MAX_LEN)
+				return -ENOMEM;
+			if (user.object_name_len) {
+				newname = ncp_kmalloc(user.object_name_len, GFP_USER);
+				if (!newname) return -ENOMEM;
+				if (copy_from_user(newname, user.object_name, user.object_name_len)) {
+					ncp_kfree_s(newname, user.object_name_len);
+					return -EFAULT;
+				}
+			} else {
+				newname = NULL;
+			}
+			/* enter critical section */
+			/* maybe that kfree can sleep so do that this way */
+			/* it is at least more SMP friendly (in future...) */
+			oldname = server->auth.object_name;
+			oldnamelen = server->auth.object_name_len;
+			oldprivate = server->priv.data;
+			oldprivatelen = server->priv.len;
+			server->auth.auth_type = user.auth_type;
+			server->auth.object_name_len = user.object_name_len;
+			server->auth.object_name = newname;
+			server->priv.len = 0;
+			server->priv.data = NULL;
+			/* leave critical section */
+			if (oldprivate) ncp_kfree_s(oldprivate, oldprivatelen);
+			if (oldname) ncp_kfree_s(oldname, oldnamelen);
+			return 0;
+		}
+	case NCP_IOC_GETPRIVATEDATA:
+		if (current->uid != server->m.mounted_uid) {
+			return -EACCES;
+		}
+		{
+			struct ncp_privatedata_ioctl user;
+			size_t outl;
+
+			if (copy_from_user(&user, argp, sizeof(user)))
+				return -EFAULT;
+			outl = user.len;
+			user.len = server->priv.len;
+			if (outl > user.len) outl = user.len;
+			if (outl) {
+				if (copy_to_user(user.data,
+						 server->priv.data,
+						 outl)) return -EFAULT;
+			}
+			if (copy_to_user(argp, &user, sizeof(user)))
+				return -EFAULT;
+			return 0;
+		}
+	case NCP_IOC_SETPRIVATEDATA:
+		if (current->uid != server->m.mounted_uid) {
+			return -EACCES;
+		}
+		{
+			struct ncp_privatedata_ioctl user;
+			void* new;
+			void* old;
+			size_t oldlen;
+
+			if (copy_from_user(&user, argp, sizeof(user)))
+				return -EFAULT;
+			if (user.len > NCP_PRIVATE_DATA_MAX_LEN)
+				return -ENOMEM;
+			if (user.len) {
+				new = ncp_kmalloc(user.len, GFP_USER);
+				if (!new) return -ENOMEM;
+				if (copy_from_user(new, user.data, user.len)) {
+					ncp_kfree_s(new, user.len);
+					return -EFAULT;
+				}
+			} else {
+				new = NULL;
+			}
+			/* enter critical section */
+			old = server->priv.data;
+			oldlen = server->priv.len;
+			server->priv.len = user.len;
+			server->priv.data = new;
+			/* leave critical section */
+			if (old) ncp_kfree_s(old, oldlen);
+			return 0;
+		}
+
+#ifdef CONFIG_NCPFS_NLS
+	case NCP_IOC_SETCHARSETS:
+		return ncp_set_charsets(server, argp);
+		
+	case NCP_IOC_GETCHARSETS:
+		return ncp_get_charsets(server, argp);
+
+#endif /* CONFIG_NCPFS_NLS */
+
+	case NCP_IOC_SETDENTRYTTL:
+		if ((permission(inode, MAY_WRITE, NULL) != 0) &&
+				 (current->uid != server->m.mounted_uid))
+			return -EACCES;
+		{
+			u_int32_t user;
+
+			if (copy_from_user(&user, argp, sizeof(user)))
+				return -EFAULT;
+			/* 20 secs at most... */
+			if (user > 20000)
+				return -EINVAL;
+			user = (user * HZ) / 1000;
+			server->dentry_ttl = user;
+			return 0;
+		}
+		
+	case NCP_IOC_GETDENTRYTTL:
+		{
+			u_int32_t user = (server->dentry_ttl * 1000) / HZ;
+			if (copy_to_user(argp, &user, sizeof(user)))
+				return -EFAULT;
+			return 0;
+		}
+
+	}
+/* #ifdef CONFIG_UID16 */
+	/* NCP_IOC_GETMOUNTUID may be same as NCP_IOC_GETMOUNTUID2,
+           so we have this out of switch */
+	if (cmd == NCP_IOC_GETMOUNTUID) {
+		__kernel_uid_t uid = 0;
+		if ((permission(inode, MAY_READ, NULL) != 0)
+		    && (current->uid != server->m.mounted_uid)) {
+			return -EACCES;
+		}
+		SET_UID(uid, server->m.mounted_uid);
+		if (put_user(uid, (__kernel_uid_t __user *)argp))
+			return -EFAULT;
+		return 0;
+	}
+/* #endif */
+	return -EINVAL;
+}

fs/ncpfs/mmap.c

@@ -0,0 +1,128 @@
+/*
+ *  mmap.c
+ *
+ *  Copyright (C) 1995, 1996 by Volker Lendecke
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *
+ */
+
+#include <linux/stat.h>
+#include <linux/time.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/shm.h>
+#include <linux/errno.h>
+#include <linux/mman.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/fcntl.h>
+#include <linux/ncp_fs.h>
+
+#include "ncplib_kernel.h"
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+/*
+ * Fill in the supplied page for mmap
+ */
+static struct page* ncp_file_mmap_nopage(struct vm_area_struct *area,
+				     unsigned long address, int *type)
+{
+	struct file *file = area->vm_file;
+	struct dentry *dentry = file->f_dentry;
+	struct inode *inode = dentry->d_inode;
+	struct page* page;
+	char *pg_addr;
+	unsigned int already_read;
+	unsigned int count;
+	int bufsize;
+	int pos;
+
+	page = alloc_page(GFP_HIGHUSER); /* ncpfs has nothing against high pages
+	           as long as recvmsg and memset works on it */
+	if (!page)
+		return page;
+	pg_addr = kmap(page);
+	address &= PAGE_MASK;
+	pos = address - area->vm_start + (area->vm_pgoff << PAGE_SHIFT);
+
+	count = PAGE_SIZE;
+	if (address + PAGE_SIZE > area->vm_end) {
+		count = area->vm_end - address;
+	}
+	/* what we can read in one go */
+	bufsize = NCP_SERVER(inode)->buffer_size;
+
+	already_read = 0;
+	if (ncp_make_open(inode, O_RDONLY) >= 0) {
+		while (already_read < count) {
+			int read_this_time;
+			int to_read;
+
+			to_read = bufsize - (pos % bufsize);
+
+			to_read = min_t(unsigned int, to_read, count - already_read);
+
+			if (ncp_read_kernel(NCP_SERVER(inode),
+				     NCP_FINFO(inode)->file_handle,
+				     pos, to_read,
+				     pg_addr + already_read,
+				     &read_this_time) != 0) {
+				read_this_time = 0;
+			}
+			pos += read_this_time;
+			already_read += read_this_time;
+
+			if (read_this_time < to_read) {
+				break;
+			}
+		}
+		ncp_inode_close(inode);
+
+	}
+
+	if (already_read < PAGE_SIZE)
+		memset(pg_addr + already_read, 0, PAGE_SIZE - already_read);
+	flush_dcache_page(page);
+	kunmap(page);
+
+	/*
+	 * If I understand ncp_read_kernel() properly, the above always
+	 * fetches from the network, here the analogue of disk.
+	 * -- wli
+	 */
+	if (type)
+		*type = VM_FAULT_MAJOR;
+	inc_page_state(pgmajfault);
+	return page;
+}
+
+static struct vm_operations_struct ncp_file_mmap =
+{
+	.nopage	= ncp_file_mmap_nopage,
+};
+
+
+/* This is used for a general mmap of a ncp file */
+int ncp_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct inode *inode = file->f_dentry->d_inode;
+	
+	DPRINTK("ncp_mmap: called\n");
+
+	if (!ncp_conn_valid(NCP_SERVER(inode)))
+		return -EIO;
+
+	/* only PAGE_COW or read-only supported now */
+	if (vma->vm_flags & VM_SHARED)
+		return -EINVAL;
+	/* we do not support files bigger than 4GB... We eventually 
+	   supports just 4GB... */
+	if (((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff 
+	   > (1U << (32 - PAGE_SHIFT)))
+		return -EFBIG;
+
+	vma->vm_ops = &ncp_file_mmap;
+	file_accessed(file);
+	return 0;
+}

fs/ncpfs/ncplib_kernel.h

@@ -0,0 +1,259 @@
+/*
+ *  ncplib_kernel.h
+ *
+ *  Copyright (C) 1995, 1996 by Volker Lendecke
+ *  Modified for big endian by J.F. Chadima and David S. Miller
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *  Modified 1998, 1999 Wolfram Pienkoss for NLS
+ *  Modified 1999 Wolfram Pienkoss for directory caching
+ *
+ */
+
+#ifndef _NCPLIB_H
+#define _NCPLIB_H
+
+#include <linux/config.h>
+
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/fcntl.h>
+#include <linux/pagemap.h>
+
+#include <asm/uaccess.h>
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <asm/string.h>
+
+#ifdef CONFIG_NCPFS_NLS
+#include <linux/nls.h>
+#else
+#include <linux/ctype.h>
+#endif /* CONFIG_NCPFS_NLS */
+
+#include <linux/ncp_fs.h>
+
+#define NCP_MIN_SYMLINK_SIZE	8
+#define NCP_MAX_SYMLINK_SIZE	512
+
+#define NCP_BLOCK_SHIFT		9
+#define NCP_BLOCK_SIZE		(1 << (NCP_BLOCK_SHIFT))
+
+int ncp_negotiate_buffersize(struct ncp_server *, int, int *);
+int ncp_negotiate_size_and_options(struct ncp_server *server, int size,
+  			  int options, int *ret_size, int *ret_options);
+
+int ncp_get_volume_info_with_number(struct ncp_server* server, int n,
+				    struct ncp_volume_info *target);
+
+int ncp_get_directory_info(struct ncp_server* server, __u8 dirhandle,
+			   struct ncp_volume_info* target);
+
+int ncp_close_file(struct ncp_server *, const char *);
+static inline int ncp_read_bounce_size(__u32 size) {
+	return sizeof(struct ncp_reply_header) + 2 + 2 + size + 8;
+};
+int ncp_read_bounce(struct ncp_server *, const char *, __u32, __u16, 
+		char __user *, int *, void* bounce, __u32 bouncelen);
+int ncp_read_kernel(struct ncp_server *, const char *, __u32, __u16, 
+		char *, int *);
+int ncp_write_kernel(struct ncp_server *, const char *, __u32, __u16,
+		const char *, int *);
+
+static inline void ncp_inode_close(struct inode *inode) {
+	atomic_dec(&NCP_FINFO(inode)->opened);
+}
+
+void ncp_extract_file_info(void* src, struct nw_info_struct* target);
+int ncp_obtain_info(struct ncp_server *server, struct inode *, char *,
+		struct nw_info_struct *target);
+int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target);
+int ncp_get_volume_root(struct ncp_server *server, const char *volname,
+			__u32 *volume, __le32 *dirent, __le32 *dosdirent);
+int ncp_lookup_volume(struct ncp_server *, const char *, struct nw_info_struct *);
+int ncp_modify_file_or_subdir_dos_info(struct ncp_server *, struct inode *,
+	 __le32, const struct nw_modify_dos_info *info);
+int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *, struct inode *,
+	 const char* path, __le32, const struct nw_modify_dos_info *info);
+int ncp_modify_nfs_info(struct ncp_server *, __u8 volnum, __le32 dirent,
+			__u32 mode, __u32 rdev);
+
+int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*);
+int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, char *);
+int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, char *,
+				int, __le32, __le16, struct ncp_entry_info *);
+
+int ncp_initialize_search(struct ncp_server *, struct inode *,
+		      struct nw_search_sequence *target);
+int ncp_search_for_file_or_subdir(struct ncp_server *server,
+			      struct nw_search_sequence *seq,
+			      struct nw_info_struct *target);
+int ncp_search_for_fileset(struct ncp_server *server,
+			   struct nw_search_sequence *seq,
+			   int* more, int* cnt,
+			   char* buffer, size_t bufsize,
+			   char** rbuf, size_t* rsize);
+
+int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server,
+			      struct inode *, char *, struct inode *, char *);
+
+
+int
+ncp_LogPhysicalRecord(struct ncp_server *server,
+		      const char *file_id, __u8 locktype,
+		      __u32 offset, __u32 length, __u16 timeout);
+
+#ifdef CONFIG_NCPFS_IOCTL_LOCKING
+int
+ncp_ClearPhysicalRecord(struct ncp_server *server,
+			const char *file_id,
+			__u32 offset, __u32 length);
+#endif	/* CONFIG_NCPFS_IOCTL_LOCKING */
+
+int
+ncp_mount_subdir(struct ncp_server *, __u8, __u8, __le32,
+		 __u32* volume, __le32* dirent, __le32* dosdirent);
+int ncp_dirhandle_alloc(struct ncp_server *, __u8 vol, __le32 dirent, __u8 *dirhandle);
+int ncp_dirhandle_free(struct ncp_server *, __u8 dirhandle);
+
+int ncp_create_new(struct inode *dir, struct dentry *dentry,
+                          int mode, dev_t rdev, __le32 attributes);
+
+static inline int ncp_is_nfs_extras(struct ncp_server* server, unsigned int volnum) {
+#ifdef CONFIG_NCPFS_NFS_NS
+	return (server->m.flags & NCP_MOUNT_NFS_EXTRAS) &&
+	       (server->name_space[volnum] == NW_NS_NFS);
+#else
+	return 0;
+#endif
+}
+
+#ifdef CONFIG_NCPFS_NLS
+
+int ncp__io2vol(struct ncp_server *, unsigned char *, unsigned int *,
+				const unsigned char *, unsigned int, int);
+int ncp__vol2io(struct ncp_server *, unsigned char *, unsigned int *,
+				const unsigned char *, unsigned int, int);
+
+#define NCP_ESC			':'
+#define NCP_IO_TABLE(dentry)	(NCP_SERVER((dentry)->d_inode)->nls_io)
+#define ncp_tolower(t, c)	nls_tolower(t, c)
+#define ncp_toupper(t, c)	nls_toupper(t, c)
+#define ncp_strnicmp(t, s1, s2, len) \
+	nls_strnicmp(t, s1, s2, len)
+#define ncp_io2vol(S,m,i,n,k,U)	ncp__io2vol(S,m,i,n,k,U)
+#define ncp_vol2io(S,m,i,n,k,U)	ncp__vol2io(S,m,i,n,k,U)
+
+#else
+
+int ncp__io2vol(unsigned char *, unsigned int *,
+				const unsigned char *, unsigned int, int);
+int ncp__vol2io(unsigned char *, unsigned int *,
+				const unsigned char *, unsigned int, int);
+
+#define NCP_IO_TABLE(dentry)	NULL
+#define ncp_tolower(t, c)	tolower(c)
+#define ncp_toupper(t, c)	toupper(c)
+#define ncp_io2vol(S,m,i,n,k,U)	ncp__io2vol(m,i,n,k,U)
+#define ncp_vol2io(S,m,i,n,k,U)	ncp__vol2io(m,i,n,k,U)
+
+
+static inline int ncp_strnicmp(struct nls_table *t, const unsigned char *s1,
+		const unsigned char *s2, int len)
+{
+	while (len--) {
+		if (tolower(*s1++) != tolower(*s2++))
+			return 1;
+	}
+
+	return 0;
+}
+
+#endif /* CONFIG_NCPFS_NLS */
+
+#define NCP_GET_AGE(dentry)	(jiffies - (dentry)->d_time)
+#define NCP_MAX_AGE(server)	((server)->dentry_ttl)
+#define NCP_TEST_AGE(server,dentry)	(NCP_GET_AGE(dentry) < NCP_MAX_AGE(server))
+
+static inline void
+ncp_age_dentry(struct ncp_server* server, struct dentry* dentry)
+{
+	dentry->d_time = jiffies - server->dentry_ttl;
+}
+
+static inline void
+ncp_new_dentry(struct dentry* dentry)
+{
+	dentry->d_time = jiffies;
+}
+
+static inline void
+ncp_renew_dentries(struct dentry *parent)
+{
+	struct ncp_server *server = NCP_SERVER(parent->d_inode);
+	struct list_head *next;
+	struct dentry *dentry;
+
+	spin_lock(&dcache_lock);
+	next = parent->d_subdirs.next;
+	while (next != &parent->d_subdirs) {
+		dentry = list_entry(next, struct dentry, d_child);
+
+		if (dentry->d_fsdata == NULL)
+			ncp_age_dentry(server, dentry);
+		else
+			ncp_new_dentry(dentry);
+
+		next = next->next;
+	}
+	spin_unlock(&dcache_lock);
+}
+
+static inline void
+ncp_invalidate_dircache_entries(struct dentry *parent)
+{
+	struct ncp_server *server = NCP_SERVER(parent->d_inode);
+	struct list_head *next;
+	struct dentry *dentry;
+
+	spin_lock(&dcache_lock);
+	next = parent->d_subdirs.next;
+	while (next != &parent->d_subdirs) {
+		dentry = list_entry(next, struct dentry, d_child);
+		dentry->d_fsdata = NULL;
+		ncp_age_dentry(server, dentry);
+		next = next->next;
+	}
+	spin_unlock(&dcache_lock);
+}
+
+struct ncp_cache_head {
+	time_t		mtime;
+	unsigned long	time;	/* cache age */
+	unsigned long	end;	/* last valid fpos in cache */
+	int		eof;
+};
+
+#define NCP_DIRCACHE_SIZE	((int)(PAGE_CACHE_SIZE/sizeof(struct dentry *)))
+union ncp_dir_cache {
+	struct ncp_cache_head	head;
+	struct dentry		*dentry[NCP_DIRCACHE_SIZE];
+};
+
+#define NCP_FIRSTCACHE_SIZE	((int)((NCP_DIRCACHE_SIZE * \
+	sizeof(struct dentry *) - sizeof(struct ncp_cache_head)) / \
+	sizeof(struct dentry *)))
+
+#define NCP_DIRCACHE_START	(NCP_DIRCACHE_SIZE - NCP_FIRSTCACHE_SIZE)
+
+struct ncp_cache_control {
+	struct	ncp_cache_head		head;
+	struct	page			*page;
+	union	ncp_dir_cache		*cache;
+	unsigned long			fpos, ofs;
+	int				filled, valid, idx;
+};
+
+#endif /* _NCPLIB_H */

fs/ncpfs/ncpsign_kernel.c

@@ -0,0 +1,127 @@
+/*
+ *  ncpsign_kernel.c
+ *
+ *  Arne de Bruijn (arne@knoware.nl), 1997
+ *
+ */
+
+#include <linux/config.h>
+
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+
+#include <linux/string.h>
+#include <linux/ncp.h>
+#include <linux/bitops.h>
+#include "ncpsign_kernel.h"
+
+/* i386: 32-bit, little endian, handles mis-alignment */
+#ifdef __i386__
+#define GET_LE32(p) (*(int *)(p))
+#define PUT_LE32(p,v) { *(int *)(p)=v; }
+#else
+/* from include/ncplib.h */
+#define BVAL(buf,pos) (((__u8 *)(buf))[pos])
+#define PVAL(buf,pos) ((unsigned)BVAL(buf,pos))
+#define BSET(buf,pos,val) (BVAL(buf,pos) = (val))
+
+static inline __u16
+WVAL_LH(__u8 * buf, int pos)
+{
+	return PVAL(buf, pos) | PVAL(buf, pos + 1) << 8;
+}
+static inline __u32
+DVAL_LH(__u8 * buf, int pos)
+{
+	return WVAL_LH(buf, pos) | WVAL_LH(buf, pos + 2) << 16;
+}
+static inline void
+WSET_LH(__u8 * buf, int pos, __u16 val)
+{
+	BSET(buf, pos, val & 0xff);
+	BSET(buf, pos + 1, val >> 8);
+}
+static inline void
+DSET_LH(__u8 * buf, int pos, __u32 val)
+{
+	WSET_LH(buf, pos, val & 0xffff);
+	WSET_LH(buf, pos + 2, val >> 16);
+}
+
+#define GET_LE32(p) DVAL_LH(p,0)
+#define PUT_LE32(p,v) DSET_LH(p,0,v)
+#endif
+
+static void nwsign(char *r_data1, char *r_data2, char *outdata) {
+ int i;
+ unsigned int w0,w1,w2,w3;
+ static int rbit[4]={0, 2, 1, 3};
+#ifdef __i386__
+ unsigned int *data2=(int *)r_data2;
+#else
+ unsigned int data2[16];
+ for (i=0;i<16;i++)
+  data2[i]=GET_LE32(r_data2+(i<<2));
+#endif 
+ w0=GET_LE32(r_data1);
+ w1=GET_LE32(r_data1+4);
+ w2=GET_LE32(r_data1+8);
+ w3=GET_LE32(r_data1+12);
+ for (i=0;i<16;i+=4) {
+  w0=rol32(w0 + ((w1 & w2) | ((~w1) & w3)) + data2[i+0],3);
+  w3=rol32(w3 + ((w0 & w1) | ((~w0) & w2)) + data2[i+1],7);
+  w2=rol32(w2 + ((w3 & w0) | ((~w3) & w1)) + data2[i+2],11);
+  w1=rol32(w1 + ((w2 & w3) | ((~w2) & w0)) + data2[i+3],19);
+ }
+ for (i=0;i<4;i++) {
+  w0=rol32(w0 + (((w2 | w3) & w1) | (w2 & w3)) + 0x5a827999 + data2[i+0],3);
+  w3=rol32(w3 + (((w1 | w2) & w0) | (w1 & w2)) + 0x5a827999 + data2[i+4],5);
+  w2=rol32(w2 + (((w0 | w1) & w3) | (w0 & w1)) + 0x5a827999 + data2[i+8],9);
+  w1=rol32(w1 + (((w3 | w0) & w2) | (w3 & w0)) + 0x5a827999 + data2[i+12],13);
+ }
+ for (i=0;i<4;i++) {
+  w0=rol32(w0 + ((w1 ^ w2) ^ w3) + 0x6ed9eba1 + data2[rbit[i]+0],3);
+  w3=rol32(w3 + ((w0 ^ w1) ^ w2) + 0x6ed9eba1 + data2[rbit[i]+8],9);
+  w2=rol32(w2 + ((w3 ^ w0) ^ w1) + 0x6ed9eba1 + data2[rbit[i]+4],11);
+  w1=rol32(w1 + ((w2 ^ w3) ^ w0) + 0x6ed9eba1 + data2[rbit[i]+12],15);
+ }
+ PUT_LE32(outdata,(w0+GET_LE32(r_data1)) & 0xffffffff);
+ PUT_LE32(outdata+4,(w1+GET_LE32(r_data1+4)) & 0xffffffff);
+ PUT_LE32(outdata+8,(w2+GET_LE32(r_data1+8)) & 0xffffffff);
+ PUT_LE32(outdata+12,(w3+GET_LE32(r_data1+12)) & 0xffffffff);
+}
+
+/* Make a signature for the current packet and add it at the end of the */
+/* packet. */
+void __sign_packet(struct ncp_server *server, const char *packet, size_t size, __u32 totalsize, void *sign_buff) {
+	unsigned char data[64];
+
+	memcpy(data, server->sign_root, 8);
+	*(__u32*)(data + 8) = totalsize;
+	if (size < 52) {
+		memcpy(data + 12, packet, size);
+		memset(data + 12 + size, 0, 52 - size);
+	} else {
+		memcpy(data + 12, packet, 52);
+	}
+	nwsign(server->sign_last, data, server->sign_last);
+	memcpy(sign_buff, server->sign_last, 8);
+}
+
+int sign_verify_reply(struct ncp_server *server, const char *packet, size_t size, __u32 totalsize, const void *sign_buff) {
+	unsigned char data[64];
+	unsigned char hash[16];
+
+	memcpy(data, server->sign_root, 8);
+	*(__u32*)(data + 8) = totalsize;
+	if (size < 52) {
+		memcpy(data + 12, packet, size);
+		memset(data + 12 + size, 0, 52 - size);
+	} else {
+		memcpy(data + 12, packet, 52);
+	}
+	nwsign(server->sign_last, data, hash);
+	return memcmp(sign_buff, hash, 8);
+}
+
+#endif	/* CONFIG_NCPFS_PACKET_SIGNING */
+

fs/ncpfs/ncpsign_kernel.h

@@ -0,0 +1,28 @@
+/*
+ *  ncpsign_kernel.h
+ *
+ *  Arne de Bruijn (arne@knoware.nl), 1997
+ *
+ */
+ 
+#ifndef _NCPSIGN_KERNEL_H
+#define _NCPSIGN_KERNEL_H
+
+#include <linux/ncp_fs.h>
+
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+void __sign_packet(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, void *sign_buff);
+int sign_verify_reply(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, const void *sign_buff);
+#endif
+
+static inline size_t sign_packet(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, void *sign_buff) {
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+	if (server->sign_active) {
+		__sign_packet(server, data, size, totalsize, sign_buff);
+		return 8;
+	}
+#endif
+	return 0;
+}
+
+#endif

fs/ncpfs/sock.c

@@ -0,0 +1,850 @@
+/*
+ *  linux/fs/ncpfs/sock.c
+ *
+ *  Copyright (C) 1992, 1993  Rick Sladkey
+ *
+ *  Modified 1995, 1996 by Volker Lendecke to be usable for ncp
+ *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
+ *
+ */
+
+#include <linux/config.h>
+
+#include <linux/time.h>
+#include <linux/errno.h>
+#include <linux/socket.h>
+#include <linux/fcntl.h>
+#include <linux/stat.h>
+#include <asm/uaccess.h>
+#include <linux/in.h>
+#include <linux/net.h>
+#include <linux/mm.h>
+#include <linux/netdevice.h>
+#include <linux/signal.h>
+#include <net/scm.h>
+#include <net/sock.h>
+#include <linux/ipx.h>
+#include <linux/poll.h>
+#include <linux/file.h>
+
+#include <linux/ncp_fs.h>
+
+#include "ncpsign_kernel.h"
+
+static int _recv(struct socket *sock, void *buf, int size, unsigned flags)
+{
+	struct msghdr msg = {NULL, };
+	struct kvec iov = {buf, size};
+	return kernel_recvmsg(sock, &msg, &iov, 1, size, flags);
+}
+
+static inline int do_send(struct socket *sock, struct kvec *vec, int count,
+			  int len, unsigned flags)
+{
+	struct msghdr msg = { .msg_flags = flags };
+	return kernel_sendmsg(sock, &msg, vec, count, len);
+}
+
+static int _send(struct socket *sock, const void *buff, int len)
+{
+	struct kvec vec;
+	vec.iov_base = (void *) buff;
+	vec.iov_len = len;
+	return do_send(sock, &vec, 1, len, 0);
+}
+
+struct ncp_request_reply {
+	struct list_head req;
+	wait_queue_head_t wq;
+	struct ncp_reply_header* reply_buf;
+	size_t datalen;
+	int result;
+	enum { RQ_DONE, RQ_INPROGRESS, RQ_QUEUED, RQ_IDLE } status;
+	struct kvec* tx_ciov;
+	size_t tx_totallen;
+	size_t tx_iovlen;
+	struct kvec tx_iov[3];
+	u_int16_t tx_type;
+	u_int32_t sign[6];
+};
+
+void ncp_tcp_data_ready(struct sock *sk, int len)
+{
+	struct ncp_server *server = sk->sk_user_data;
+
+	server->data_ready(sk, len);
+	schedule_work(&server->rcv.tq);
+}
+
+void ncp_tcp_error_report(struct sock *sk)
+{
+	struct ncp_server *server = sk->sk_user_data;
+	
+	server->error_report(sk);
+	schedule_work(&server->rcv.tq);
+}
+
+void ncp_tcp_write_space(struct sock *sk)
+{
+	struct ncp_server *server = sk->sk_user_data;
+	
+	/* We do not need any locking: we first set tx.creq, and then we do sendmsg,
+	   not vice versa... */
+	server->write_space(sk);
+	if (server->tx.creq)
+		schedule_work(&server->tx.tq);
+}
+
+void ncpdgram_timeout_call(unsigned long v)
+{
+	struct ncp_server *server = (void*)v;
+	
+	schedule_work(&server->timeout_tq);
+}
+
+static inline void ncp_finish_request(struct ncp_request_reply *req, int result)
+{
+	req->result = result;
+	req->status = RQ_DONE;
+	wake_up_all(&req->wq);
+}
+
+static void __abort_ncp_connection(struct ncp_server *server, struct ncp_request_reply *aborted, int err)
+{
+	struct ncp_request_reply *req;
+
+	ncp_invalidate_conn(server);
+	del_timer(&server->timeout_tm);
+	while (!list_empty(&server->tx.requests)) {
+		req = list_entry(server->tx.requests.next, struct ncp_request_reply, req);
+		
+		list_del_init(&req->req);
+		if (req == aborted) {
+			ncp_finish_request(req, err);
+		} else {
+			ncp_finish_request(req, -EIO);
+		}
+	}
+	req = server->rcv.creq;
+	if (req) {
+		server->rcv.creq = NULL;
+		if (req == aborted) {
+			ncp_finish_request(req, err);
+		} else {
+			ncp_finish_request(req, -EIO);
+		}
+		server->rcv.ptr = NULL;
+		server->rcv.state = 0;
+	}
+	req = server->tx.creq;
+	if (req) {
+		server->tx.creq = NULL;
+		if (req == aborted) {
+			ncp_finish_request(req, err);
+		} else {
+			ncp_finish_request(req, -EIO);
+		}
+	}
+}
+
+static inline int get_conn_number(struct ncp_reply_header *rp)
+{
+	return rp->conn_low | (rp->conn_high << 8);
+}
+
+static inline void __ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
+{
+	/* If req is done, we got signal, but we also received answer... */
+	switch (req->status) {
+		case RQ_IDLE:
+		case RQ_DONE:
+			break;
+		case RQ_QUEUED:
+			list_del_init(&req->req);
+			ncp_finish_request(req, err);
+			break;
+		case RQ_INPROGRESS:
+			__abort_ncp_connection(server, req, err);
+			break;
+	}
+}
+
+static inline void ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
+{
+	down(&server->rcv.creq_sem);
+	__ncp_abort_request(server, req, err);
+	up(&server->rcv.creq_sem);
+}
+
+static inline void __ncptcp_abort(struct ncp_server *server)
+{
+	__abort_ncp_connection(server, NULL, 0);
+}
+
+static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req)
+{
+	struct kvec vec[3];
+	/* sock_sendmsg updates iov pointers for us :-( */
+	memcpy(vec, req->tx_ciov, req->tx_iovlen * sizeof(vec[0]));
+	return do_send(sock, vec, req->tx_iovlen,
+		       req->tx_totallen, MSG_DONTWAIT);
+}
+
+static void __ncptcp_try_send(struct ncp_server *server)
+{
+	struct ncp_request_reply *rq;
+	struct kvec *iov;
+	struct kvec iovc[3];
+	int result;
+
+	rq = server->tx.creq;
+	if (!rq)
+		return;
+
+	/* sock_sendmsg updates iov pointers for us :-( */
+	memcpy(iovc, rq->tx_ciov, rq->tx_iovlen * sizeof(iov[0]));
+	result = do_send(server->ncp_sock, iovc, rq->tx_iovlen,
+			 rq->tx_totallen, MSG_NOSIGNAL | MSG_DONTWAIT);
+
+	if (result == -EAGAIN)
+		return;
+
+	if (result < 0) {
+		printk(KERN_ERR "ncpfs: tcp: Send failed: %d\n", result);
+		__ncp_abort_request(server, rq, result);
+		return;
+	}
+	if (result >= rq->tx_totallen) {
+		server->rcv.creq = rq;
+		server->tx.creq = NULL;
+		return;
+	}
+	rq->tx_totallen -= result;
+	iov = rq->tx_ciov;
+	while (iov->iov_len <= result) {
+		result -= iov->iov_len;
+		iov++;
+		rq->tx_iovlen--;
+	}
+	iov->iov_base += result;
+	iov->iov_len -= result;
+	rq->tx_ciov = iov;
+}
+
+static inline void ncp_init_header(struct ncp_server *server, struct ncp_request_reply *req, struct ncp_request_header *h)
+{
+	req->status = RQ_INPROGRESS;
+	h->conn_low = server->connection;
+	h->conn_high = server->connection >> 8;
+	h->sequence = ++server->sequence;
+}
+	
+static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request_reply *req)
+{
+	size_t signlen;
+	struct ncp_request_header* h;
+	
+	req->tx_ciov = req->tx_iov + 1;
+
+	h = req->tx_iov[1].iov_base;
+	ncp_init_header(server, req, h);
+	signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1, 
+			req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1,
+			cpu_to_le32(req->tx_totallen), req->sign);
+	if (signlen) {
+		req->tx_ciov[1].iov_base = req->sign;
+		req->tx_ciov[1].iov_len = signlen;
+		req->tx_iovlen += 1;
+		req->tx_totallen += signlen;
+	}
+	server->rcv.creq = req;
+	server->timeout_last = server->m.time_out;
+	server->timeout_retries = server->m.retry_count;
+	ncpdgram_send(server->ncp_sock, req);
+	mod_timer(&server->timeout_tm, jiffies + server->m.time_out);
+}
+
+#define NCP_TCP_XMIT_MAGIC	(0x446D6454)
+#define NCP_TCP_XMIT_VERSION	(1)
+#define NCP_TCP_RCVD_MAGIC	(0x744E6350)
+
+static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
+{
+	size_t signlen;
+	struct ncp_request_header* h;
+
+	req->tx_ciov = req->tx_iov;
+	h = req->tx_iov[1].iov_base;
+	ncp_init_header(server, req, h);
+	signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1,
+			req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1,
+			cpu_to_be32(req->tx_totallen + 24), req->sign + 4) + 16;
+
+	req->sign[0] = htonl(NCP_TCP_XMIT_MAGIC);
+	req->sign[1] = htonl(req->tx_totallen + signlen);
+	req->sign[2] = htonl(NCP_TCP_XMIT_VERSION);
+	req->sign[3] = htonl(req->datalen + 8);
+	req->tx_iov[0].iov_base = req->sign;
+	req->tx_iov[0].iov_len = signlen;
+	req->tx_iovlen += 1;
+	req->tx_totallen += signlen;
+
+	server->tx.creq = req;
+	__ncptcp_try_send(server);
+}
+
+static inline void __ncp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
+{
+	if (server->ncp_sock->type == SOCK_STREAM)
+		ncptcp_start_request(server, req);
+	else
+		ncpdgram_start_request(server, req);
+}
+
+static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply *req)
+{
+	down(&server->rcv.creq_sem);
+	if (!ncp_conn_valid(server)) {
+		up(&server->rcv.creq_sem);
+		printk(KERN_ERR "ncpfs: tcp: Server died\n");
+		return -EIO;
+	}
+	if (server->tx.creq || server->rcv.creq) {
+		req->status = RQ_QUEUED;
+		list_add_tail(&req->req, &server->tx.requests);
+		up(&server->rcv.creq_sem);
+		return 0;
+	}
+	__ncp_start_request(server, req);
+	up(&server->rcv.creq_sem);
+	return 0;
+}
+
+static void __ncp_next_request(struct ncp_server *server)
+{
+	struct ncp_request_reply *req;
+
+	server->rcv.creq = NULL;
+	if (list_empty(&server->tx.requests)) {
+		return;
+	}
+	req = list_entry(server->tx.requests.next, struct ncp_request_reply, req);
+	list_del_init(&req->req);
+	__ncp_start_request(server, req);
+}
+
+static void info_server(struct ncp_server *server, unsigned int id, const void * data, size_t len)
+{
+	if (server->info_sock) {
+		struct kvec iov[2];
+		__be32 hdr[2];
+	
+		hdr[0] = cpu_to_be32(len + 8);
+		hdr[1] = cpu_to_be32(id);
+	
+		iov[0].iov_base = hdr;
+		iov[0].iov_len = 8;
+		iov[1].iov_base = (void *) data;
+		iov[1].iov_len = len;
+
+		do_send(server->info_sock, iov, 2, len + 8, MSG_NOSIGNAL);
+	}
+}
+
+void ncpdgram_rcv_proc(void *s)
+{
+	struct ncp_server *server = s;
+	struct socket* sock;
+	
+	sock = server->ncp_sock;
+	
+	while (1) {
+		struct ncp_reply_header reply;
+		int result;
+
+		result = _recv(sock, &reply, sizeof(reply), MSG_PEEK | MSG_DONTWAIT);
+		if (result < 0) {
+			break;
+		}
+		if (result >= sizeof(reply)) {
+			struct ncp_request_reply *req;
+	
+			if (reply.type == NCP_WATCHDOG) {
+				unsigned char buf[10];
+
+				if (server->connection != get_conn_number(&reply)) {
+					goto drop;
+				}
+				result = _recv(sock, buf, sizeof(buf), MSG_DONTWAIT);
+				if (result < 0) {
+					DPRINTK("recv failed with %d\n", result);
+					continue;
+				}
+				if (result < 10) {
+					DPRINTK("too short (%u) watchdog packet\n", result);
+					continue;
+				}
+				if (buf[9] != '?') {
+					DPRINTK("bad signature (%02X) in watchdog packet\n", buf[9]);
+					continue;
+				}
+				buf[9] = 'Y';
+				_send(sock, buf, sizeof(buf));
+				continue;
+			}
+			if (reply.type != NCP_POSITIVE_ACK && reply.type != NCP_REPLY) {
+				result = _recv(sock, server->unexpected_packet.data, sizeof(server->unexpected_packet.data), MSG_DONTWAIT);
+				if (result < 0) {
+					continue;
+				}
+				info_server(server, 0, server->unexpected_packet.data, result);
+				continue;
+			}
+			down(&server->rcv.creq_sem);		
+			req = server->rcv.creq;
+			if (req && (req->tx_type == NCP_ALLOC_SLOT_REQUEST || (server->sequence == reply.sequence && 
+					server->connection == get_conn_number(&reply)))) {
+				if (reply.type == NCP_POSITIVE_ACK) {
+					server->timeout_retries = server->m.retry_count;
+					server->timeout_last = NCP_MAX_RPC_TIMEOUT;
+					mod_timer(&server->timeout_tm, jiffies + NCP_MAX_RPC_TIMEOUT);
+				} else if (reply.type == NCP_REPLY) {
+					result = _recv(sock, (void*)req->reply_buf, req->datalen, MSG_DONTWAIT);
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+					if (result >= 0 && server->sign_active && req->tx_type != NCP_DEALLOC_SLOT_REQUEST) {
+						if (result < 8 + 8) {
+							result = -EIO;
+						} else {
+							unsigned int hdrl;
+							
+							result -= 8;
+							hdrl = sock->sk->sk_family == AF_INET ? 8 : 6;
+							if (sign_verify_reply(server, ((char*)req->reply_buf) + hdrl, result - hdrl, cpu_to_le32(result), ((char*)req->reply_buf) + result)) {
+								printk(KERN_INFO "ncpfs: Signature violation\n");
+								result = -EIO;
+							}
+						}
+					}
+#endif
+					del_timer(&server->timeout_tm);
+				     	server->rcv.creq = NULL;
+					ncp_finish_request(req, result);
+					__ncp_next_request(server);
+					up(&server->rcv.creq_sem);
+					continue;
+				}
+			}
+			up(&server->rcv.creq_sem);
+		}
+drop:;		
+		_recv(sock, &reply, sizeof(reply), MSG_DONTWAIT);
+	}
+}
+
+static void __ncpdgram_timeout_proc(struct ncp_server *server)
+{
+	/* If timer is pending, we are processing another request... */
+	if (!timer_pending(&server->timeout_tm)) {
+		struct ncp_request_reply* req;
+		
+		req = server->rcv.creq;
+		if (req) {
+			int timeout;
+			
+			if (server->m.flags & NCP_MOUNT_SOFT) {
+				if (server->timeout_retries-- == 0) {
+					__ncp_abort_request(server, req, -ETIMEDOUT);
+					return;
+				}
+			}
+			/* Ignore errors */
+			ncpdgram_send(server->ncp_sock, req);
+			timeout = server->timeout_last << 1;
+			if (timeout > NCP_MAX_RPC_TIMEOUT) {
+				timeout = NCP_MAX_RPC_TIMEOUT;
+			}
+			server->timeout_last = timeout;
+			mod_timer(&server->timeout_tm, jiffies + timeout);
+		}
+	}
+}
+
+void ncpdgram_timeout_proc(void *s)
+{
+	struct ncp_server *server = s;
+	down(&server->rcv.creq_sem);
+	__ncpdgram_timeout_proc(server);
+	up(&server->rcv.creq_sem);
+}
+
+static inline void ncp_init_req(struct ncp_request_reply* req)
+{
+	init_waitqueue_head(&req->wq);
+	req->status = RQ_IDLE;
+}
+
+static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len)
+{
+	int result;
+	
+	if (buffer) {
+		result = _recv(server->ncp_sock, buffer, len, MSG_DONTWAIT);
+	} else {
+		static unsigned char dummy[1024];
+			
+		if (len > sizeof(dummy)) {
+			len = sizeof(dummy);
+		}
+		result = _recv(server->ncp_sock, dummy, len, MSG_DONTWAIT);
+	}
+	if (result < 0) {
+		return result;
+	}
+	if (result > len) {
+		printk(KERN_ERR "ncpfs: tcp: bug in recvmsg (%u > %Zu)\n", result, len);
+		return -EIO;			
+	}
+	return result;
+}	
+
+static int __ncptcp_rcv_proc(struct ncp_server *server)
+{
+	/* We have to check the result, so store the complete header */
+	while (1) {
+		int result;
+		struct ncp_request_reply *req;
+		int datalen;
+		int type;
+
+		while (server->rcv.len) {
+			result = do_tcp_rcv(server, server->rcv.ptr, server->rcv.len);
+			if (result == -EAGAIN) {
+				return 0;
+			}
+			if (result <= 0) {
+				req = server->rcv.creq;
+				if (req) {
+					__ncp_abort_request(server, req, -EIO);
+				} else {
+					__ncptcp_abort(server);
+				}
+				if (result < 0) {
+					printk(KERN_ERR "ncpfs: tcp: error in recvmsg: %d\n", result);
+				} else {
+					DPRINTK(KERN_ERR "ncpfs: tcp: EOF\n");
+				}
+				return -EIO;
+			}
+			if (server->rcv.ptr) {
+				server->rcv.ptr += result;
+			}
+			server->rcv.len -= result;
+		}
+		switch (server->rcv.state) {
+			case 0:
+				if (server->rcv.buf.magic != htonl(NCP_TCP_RCVD_MAGIC)) {
+					printk(KERN_ERR "ncpfs: tcp: Unexpected reply type %08X\n", ntohl(server->rcv.buf.magic));
+					__ncptcp_abort(server);
+					return -EIO;
+				}
+				datalen = ntohl(server->rcv.buf.len) & 0x0FFFFFFF;
+				if (datalen < 10) {
+					printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen);
+					__ncptcp_abort(server);
+					return -EIO;
+				}
+#ifdef CONFIG_NCPFS_PACKET_SIGNING				
+				if (server->sign_active) {
+					if (datalen < 18) {
+						printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen);
+						__ncptcp_abort(server);
+						return -EIO;
+					}
+					server->rcv.buf.len = datalen - 8;
+					server->rcv.ptr = (unsigned char*)&server->rcv.buf.p1;
+					server->rcv.len = 8;
+					server->rcv.state = 4;
+					break;
+				}
+#endif				
+				type = ntohs(server->rcv.buf.type);
+#ifdef CONFIG_NCPFS_PACKET_SIGNING				
+cont:;				
+#endif
+				if (type != NCP_REPLY) {
+					if (datalen - 8 <= sizeof(server->unexpected_packet.data)) {
+						*(__u16*)(server->unexpected_packet.data) = htons(type);
+						server->unexpected_packet.len = datalen - 8;
+
+						server->rcv.state = 5;
+						server->rcv.ptr = server->unexpected_packet.data + 2;
+						server->rcv.len = datalen - 10;
+						break;
+					}					
+					DPRINTK("ncpfs: tcp: Unexpected NCP type %02X\n", type);
+skipdata2:;
+					server->rcv.state = 2;
+skipdata:;
+					server->rcv.ptr = NULL;
+					server->rcv.len = datalen - 10;
+					break;
+				}
+				req = server->rcv.creq;
+				if (!req) {
+					DPRINTK(KERN_ERR "ncpfs: Reply without appropriate request\n");
+					goto skipdata2;
+				}
+				if (datalen > req->datalen + 8) {
+					printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d (expected at most %Zd)\n", datalen, req->datalen + 8);
+					server->rcv.state = 3;
+					goto skipdata;
+				}
+				req->datalen = datalen - 8;
+				req->reply_buf->type = NCP_REPLY;
+				server->rcv.ptr = (unsigned char*)(req->reply_buf) + 2;
+				server->rcv.len = datalen - 10;
+				server->rcv.state = 1;
+				break;
+#ifdef CONFIG_NCPFS_PACKET_SIGNING				
+			case 4:
+				datalen = server->rcv.buf.len;
+				type = ntohs(server->rcv.buf.type2);
+				goto cont;
+#endif
+			case 1:
+				req = server->rcv.creq;
+				if (req->tx_type != NCP_ALLOC_SLOT_REQUEST) {
+					if (req->reply_buf->sequence != server->sequence) {
+						printk(KERN_ERR "ncpfs: tcp: Bad sequence number\n");
+						__ncp_abort_request(server, req, -EIO);
+						return -EIO;
+					}
+					if ((req->reply_buf->conn_low | (req->reply_buf->conn_high << 8)) != server->connection) {
+						printk(KERN_ERR "ncpfs: tcp: Connection number mismatch\n");
+						__ncp_abort_request(server, req, -EIO);
+						return -EIO;
+					}
+				}
+#ifdef CONFIG_NCPFS_PACKET_SIGNING				
+				if (server->sign_active && req->tx_type != NCP_DEALLOC_SLOT_REQUEST) {
+					if (sign_verify_reply(server, (unsigned char*)(req->reply_buf) + 6, req->datalen - 6, cpu_to_be32(req->datalen + 16), &server->rcv.buf.type)) {
+						printk(KERN_ERR "ncpfs: tcp: Signature violation\n");
+						__ncp_abort_request(server, req, -EIO);
+						return -EIO;
+					}
+				}
+#endif				
+				ncp_finish_request(req, req->datalen);
+			nextreq:;
+				__ncp_next_request(server);
+			case 2:
+			next:;
+				server->rcv.ptr = (unsigned char*)&server->rcv.buf;
+				server->rcv.len = 10;
+				server->rcv.state = 0;
+				break;
+			case 3:
+				ncp_finish_request(server->rcv.creq, -EIO);
+				goto nextreq;
+			case 5:
+				info_server(server, 0, server->unexpected_packet.data, server->unexpected_packet.len);
+				goto next;
+		}
+	}
+}
+
+void ncp_tcp_rcv_proc(void *s)
+{
+	struct ncp_server *server = s;
+
+	down(&server->rcv.creq_sem);
+	__ncptcp_rcv_proc(server);
+	up(&server->rcv.creq_sem);
+}
+
+void ncp_tcp_tx_proc(void *s)
+{
+	struct ncp_server *server = s;
+	
+	down(&server->rcv.creq_sem);
+	__ncptcp_try_send(server);
+	up(&server->rcv.creq_sem);
+}
+
+static int do_ncp_rpc_call(struct ncp_server *server, int size,
+		struct ncp_reply_header* reply_buf, int max_reply_size)
+{
+	int result;
+	struct ncp_request_reply req;
+
+	ncp_init_req(&req);
+	req.reply_buf = reply_buf;
+	req.datalen = max_reply_size;
+	req.tx_iov[1].iov_base = server->packet;
+	req.tx_iov[1].iov_len = size;
+	req.tx_iovlen = 1;
+	req.tx_totallen = size;
+	req.tx_type = *(u_int16_t*)server->packet;
+
+	result = ncp_add_request(server, &req);
+	if (result < 0) {
+		return result;
+	}
+	if (wait_event_interruptible(req.wq, req.status == RQ_DONE)) {
+		ncp_abort_request(server, &req, -EIO);
+	}
+	return req.result;
+}
+
+/*
+ * We need the server to be locked here, so check!
+ */
+
+static int ncp_do_request(struct ncp_server *server, int size,
+		void* reply, int max_reply_size)
+{
+	int result;
+
+	if (server->lock == 0) {
+		printk(KERN_ERR "ncpfs: Server not locked!\n");
+		return -EIO;
+	}
+	if (!ncp_conn_valid(server)) {
+		printk(KERN_ERR "ncpfs: Connection invalid!\n");
+		return -EIO;
+	}
+	{
+		sigset_t old_set;
+		unsigned long mask, flags;
+
+		spin_lock_irqsave(&current->sighand->siglock, flags);
+		old_set = current->blocked;
+		if (current->flags & PF_EXITING)
+			mask = 0;
+		else
+			mask = sigmask(SIGKILL);
+		if (server->m.flags & NCP_MOUNT_INTR) {
+			/* FIXME: This doesn't seem right at all.  So, like,
+			   we can't handle SIGINT and get whatever to stop?
+			   What if we've blocked it ourselves?  What about
+			   alarms?  Why, in fact, are we mucking with the
+			   sigmask at all? -- r~ */
+			if (current->sighand->action[SIGINT - 1].sa.sa_handler == SIG_DFL)
+				mask |= sigmask(SIGINT);
+			if (current->sighand->action[SIGQUIT - 1].sa.sa_handler == SIG_DFL)
+				mask |= sigmask(SIGQUIT);
+		}
+		siginitsetinv(&current->blocked, mask);
+		recalc_sigpending();
+		spin_unlock_irqrestore(&current->sighand->siglock, flags);
+		
+		result = do_ncp_rpc_call(server, size, reply, max_reply_size);
+
+		spin_lock_irqsave(&current->sighand->siglock, flags);
+		current->blocked = old_set;
+		recalc_sigpending();
+		spin_unlock_irqrestore(&current->sighand->siglock, flags);
+	}
+
+	DDPRINTK("do_ncp_rpc_call returned %d\n", result);
+
+	if (result < 0) {
+		/* There was a problem with I/O, so the connections is
+		 * no longer usable. */
+		ncp_invalidate_conn(server);
+	}
+	return result;
+}
+
+/* ncp_do_request assures that at least a complete reply header is
+ * received. It assumes that server->current_size contains the ncp
+ * request size
+ */
+int ncp_request2(struct ncp_server *server, int function, 
+		void* rpl, int size)
+{
+	struct ncp_request_header *h;
+	struct ncp_reply_header* reply = rpl;
+	int result;
+
+	h = (struct ncp_request_header *) (server->packet);
+	if (server->has_subfunction != 0) {
+		*(__u16 *) & (h->data[0]) = htons(server->current_size - sizeof(*h) - 2);
+	}
+	h->type = NCP_REQUEST;
+	/*
+	 * The server shouldn't know or care what task is making a
+	 * request, so we always use the same task number.
+	 */
+	h->task = 2; /* (current->pid) & 0xff; */
+	h->function = function;
+
+	result = ncp_do_request(server, server->current_size, reply, size);
+	if (result < 0) {
+		DPRINTK("ncp_request_error: %d\n", result);
+		goto out;
+	}
+	server->completion = reply->completion_code;
+	server->conn_status = reply->connection_state;
+	server->reply_size = result;
+	server->ncp_reply_size = result - sizeof(struct ncp_reply_header);
+
+	result = reply->completion_code;
+
+	if (result != 0)
+		PPRINTK("ncp_request: completion code=%x\n", result);
+out:
+	return result;
+}
+
+int ncp_connect(struct ncp_server *server)
+{
+	struct ncp_request_header *h;
+	int result;
+
+	server->connection = 0xFFFF;
+	server->sequence = 255;
+
+	h = (struct ncp_request_header *) (server->packet);
+	h->type = NCP_ALLOC_SLOT_REQUEST;
+	h->task		= 2; /* see above */
+	h->function	= 0;
+
+	result = ncp_do_request(server, sizeof(*h), server->packet, server->packet_size);
+	if (result < 0)
+		goto out;
+	server->connection = h->conn_low + (h->conn_high * 256);
+	result = 0;
+out:
+	return result;
+}
+
+int ncp_disconnect(struct ncp_server *server)
+{
+	struct ncp_request_header *h;
+
+	h = (struct ncp_request_header *) (server->packet);
+	h->type = NCP_DEALLOC_SLOT_REQUEST;
+	h->task		= 2; /* see above */
+	h->function	= 0;
+
+	return ncp_do_request(server, sizeof(*h), server->packet, server->packet_size);
+}
+
+void ncp_lock_server(struct ncp_server *server)
+{
+	down(&server->sem);
+	if (server->lock)
+		printk(KERN_WARNING "ncp_lock_server: was locked!\n");
+	server->lock = 1;
+}
+
+void ncp_unlock_server(struct ncp_server *server)
+{
+	if (!server->lock) {
+		printk(KERN_WARNING "ncp_unlock_server: was not locked!\n");
+		return;
+	}
+	server->lock = 0;
+	up(&server->sem);
+}

fs/ncpfs/symlink.c

@@ -0,0 +1,183 @@
+/*
+ *  linux/fs/ncpfs/symlink.c
+ *
+ *  Code for allowing symbolic links on NCPFS (i.e. NetWare)
+ *  Symbolic links are not supported on native NetWare, so we use an
+ *  infrequently-used flag (Sh) and store a two-word magic header in
+ *  the file to make sure we don't accidentally use a non-link file
+ *  as a link.
+ *
+ *  When using the NFS namespace, we set the mode to indicate a symlink and
+ *  don't bother with the magic numbers.
+ *
+ *  from linux/fs/ext2/symlink.c
+ *
+ *  Copyright (C) 1998-99, Frank A. Vorstenbosch
+ *
+ *  ncpfs symlink handling code
+ *  NLS support (c) 1999 Petr Vandrovec
+ *  Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
+ *
+ */
+
+#include <linux/config.h>
+
+#include <asm/uaccess.h>
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ncp_fs.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/stat.h>
+#include "ncplib_kernel.h"
+
+
+/* these magic numbers must appear in the symlink file -- this makes it a bit
+   more resilient against the magic attributes being set on random files. */
+
+#define NCP_SYMLINK_MAGIC0	cpu_to_le32(0x6c6d7973)     /* "symlnk->" */
+#define NCP_SYMLINK_MAGIC1	cpu_to_le32(0x3e2d6b6e)
+
+/* ----- read a symbolic link ------------------------------------------ */
+
+static int ncp_symlink_readpage(struct file *file, struct page *page)
+{
+	struct inode *inode = page->mapping->host;
+	int error, length, len;
+	char *link, *rawlink;
+	char *buf = kmap(page);
+
+	error = -ENOMEM;
+	rawlink=(char *)kmalloc(NCP_MAX_SYMLINK_SIZE, GFP_KERNEL);
+	if (!rawlink)
+		goto fail;
+
+	if (ncp_make_open(inode,O_RDONLY))
+		goto failEIO;
+
+	error=ncp_read_kernel(NCP_SERVER(inode),NCP_FINFO(inode)->file_handle,
+                         0,NCP_MAX_SYMLINK_SIZE,rawlink,&length);
+
+	ncp_inode_close(inode);
+	/* Close file handle if no other users... */
+	ncp_make_closed(inode);
+	if (error)
+		goto failEIO;
+
+	if (NCP_FINFO(inode)->flags & NCPI_KLUDGE_SYMLINK) {
+		if (length<NCP_MIN_SYMLINK_SIZE || 
+		    ((__le32 *)rawlink)[0]!=NCP_SYMLINK_MAGIC0 ||
+		    ((__le32 *)rawlink)[1]!=NCP_SYMLINK_MAGIC1)
+		    	goto failEIO;
+		link = rawlink + 8;
+		length -= 8;
+	} else {
+		link = rawlink;
+	}
+
+	len = NCP_MAX_SYMLINK_SIZE;
+	error = ncp_vol2io(NCP_SERVER(inode), buf, &len, link, length, 0);
+	kfree(rawlink);
+	if (error)
+		goto fail;
+	SetPageUptodate(page);
+	kunmap(page);
+	unlock_page(page);
+	return 0;
+
+failEIO:
+	error = -EIO;
+	kfree(rawlink);
+fail:
+	SetPageError(page);
+	kunmap(page);
+	unlock_page(page);
+	return error;
+}
+
+/*
+ * symlinks can't do much...
+ */
+struct address_space_operations ncp_symlink_aops = {
+	.readpage	= ncp_symlink_readpage,
+};
+	
+/* ----- create a new symbolic link -------------------------------------- */
+ 
+int ncp_symlink(struct inode *dir, struct dentry *dentry, const char *symname) {
+	struct inode *inode;
+	char *rawlink;
+	int length, err, i, outlen;
+	int kludge;
+	int mode;
+	__le32 attr;
+	unsigned int hdr;
+
+	DPRINTK("ncp_symlink(dir=%p,dentry=%p,symname=%s)\n",dir,dentry,symname);
+
+	if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber))
+		kludge = 0;
+	else
+#ifdef CONFIG_NCPFS_EXTRAS
+	if (NCP_SERVER(dir)->m.flags & NCP_MOUNT_SYMLINKS)
+		kludge = 1;
+	else
+#endif
+	/* EPERM is returned by VFS if symlink procedure does not exist */
+		return -EPERM;
+  
+	rawlink=(char *)kmalloc(NCP_MAX_SYMLINK_SIZE, GFP_KERNEL);
+	if (!rawlink)
+		return -ENOMEM;
+
+	if (kludge) {
+		mode = 0;
+		attr = aSHARED | aHIDDEN;
+		((__le32 *)rawlink)[0]=NCP_SYMLINK_MAGIC0;
+		((__le32 *)rawlink)[1]=NCP_SYMLINK_MAGIC1;
+		hdr = 8;
+	} else {
+		mode = S_IFLNK | S_IRWXUGO;
+		attr = 0;
+		hdr = 0;
+	}			
+
+	length = strlen(symname);
+	/* map to/from server charset, do not touch upper/lower case as
+	   symlink can point out of ncp filesystem */
+	outlen = NCP_MAX_SYMLINK_SIZE - hdr;
+	err = ncp_io2vol(NCP_SERVER(dir), rawlink + hdr, &outlen, symname, length, 0);
+	if (err)
+		goto failfree;
+
+	outlen += hdr;
+
+	err = -EIO;
+	if (ncp_create_new(dir,dentry,mode,0,attr)) {
+		goto failfree;
+	}
+
+	inode=dentry->d_inode;
+
+	if (ncp_make_open(inode, O_WRONLY))
+		goto failfree;
+
+	if (ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle, 
+			     0, outlen, rawlink, &i) || i!=outlen) {
+		goto fail;
+	}
+
+	ncp_inode_close(inode);
+	ncp_make_closed(inode);
+	kfree(rawlink);
+	return 0;
+fail:;
+	ncp_inode_close(inode);
+	ncp_make_closed(inode);
+failfree:;
+	kfree(rawlink);
+	return err;
+}
+
+/* ----- EOF ----- */