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staging: ncpfs: delete it

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The ncpfs code moved into the staging tree back in November 2017 and no
one has complained or even noticed it was gone.  Because of that, let's
just delete it.

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-06-01 20:23:10 +02:00
parent be65f9ed26
commit bd32895c75
21 changed files with 0 additions and 6874 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/Kconfig
View File

@ -26,8 +26,6 @@ if STAGING
source "drivers/staging/ipx/Kconfig"
source "drivers/staging/ncpfs/Kconfig"
source "drivers/staging/wlan-ng/Kconfig"
source "drivers/staging/comedi/Kconfig"

1
drivers/staging/Makefile
View File

@ -4,7 +4,6 @@
obj-y += media/
obj-y += typec/
obj-$(CONFIG_IPX) += ipx/
obj-$(CONFIG_NCP_FS) += ncpfs/
obj-$(CONFIG_PRISM2_USB) += wlan-ng/
obj-$(CONFIG_COMEDI) += comedi/
obj-$(CONFIG_FB_OLPC_DCON) += olpc_dcon/

108
drivers/staging/ncpfs/Kconfig
View File

@ -1,108 +0,0 @@
#
# NCP Filesystem configuration
#
config NCP_FS
tristate "NCP file system support (to mount NetWare volumes)"
depends on IPX!=n || INET
help
NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
used by Novell NetWare clients to talk to file servers. It is to
IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
to mount NetWare file server volumes and to access them just like
any other Unix directory. For details, please read the file
<file:Documentation/filesystems/ncpfs.txt> in the kernel source and
the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
You do not have to say Y here if you want your Linux box to act as a
file *server* for Novell NetWare clients.
General information about how to connect Linux, Windows machines and
Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
To compile this as a module, choose M here: the module will be called
ncpfs. Say N unless you are connected to a Novell network.
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.

17
drivers/staging/ncpfs/Makefile
View File

@ -1,17 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
#
# 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
# ccflags-y := -DDEBUG_NCP=1
CFLAGS_ncplib_kernel.o := -finline-functions

4
drivers/staging/ncpfs/TODO
View File

@ -1,4 +0,0 @@
The ncpfs code will be removed soon from the kernel tree as it is old and
obsolete and broken.
Don't worry about fixing up anything here, it's not needed.

1232
drivers/staging/ncpfs/dir.c
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File diff suppressed because it is too large Load Diff

263
drivers/staging/ncpfs/file.c
View File

@ -1,263 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* file.c
*
* Copyright (C) 1995, 1996 by Volker Lendecke
* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/uaccess.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/vmalloc.h>
#include <linux/sched.h>
#include "ncp_fs.h"
static int ncp_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
return file_write_and_wait_range(file, start, end);
}
/*
* 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) {
pr_err("%s: got NULL inode\n", __func__);
goto out;
}
ncp_dbg(1, "opened=%d, volume # %u, dir entry # %u\n",
atomic_read(&NCP_FINFO(inode)->opened),
NCP_FINFO(inode)->volNumber,
NCP_FINFO(inode)->dirEntNum);
error = -EACCES;
mutex_lock(&NCP_FINFO(inode)->open_mutex);
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) {
ncp_vdbg("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;
ncp_vdbg("file open, access=%x\n", access);
if (access == right || access == O_RDWR) {
atomic_inc(&NCP_FINFO(inode)->opened);
error = 0;
}
out_unlock:
mutex_unlock(&NCP_FINFO(inode)->open_mutex);
out:
return error;
}
static ssize_t
ncp_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_read = 0;
off_t pos = iocb->ki_pos;
size_t bufsize;
int error;
void *freepage;
size_t freelen;
ncp_dbg(1, "enter %pD2\n", file);
if (!iov_iter_count(to))
return 0;
if (pos > inode->i_sb->s_maxbytes)
return 0;
iov_iter_truncate(to, inode->i_sb->s_maxbytes - pos);
error = ncp_make_open(inode, O_RDONLY);
if (error) {
ncp_dbg(1, "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 (iov_iter_count(to)) {
int read_this_time;
size_t to_read = min_t(size_t,
bufsize - (pos % bufsize),
iov_iter_count(to));
error = ncp_read_bounce(NCP_SERVER(inode),
NCP_FINFO(inode)->file_handle,
pos, to_read, to, &read_this_time,
freepage, freelen);
if (error) {
error = -EIO; /* NW errno -> Linux errno */
break;
}
pos += read_this_time;
already_read += read_this_time;
if (read_this_time != to_read)
break;
}
vfree(freepage);
iocb->ki_pos = pos;
file_accessed(file);
ncp_dbg(1, "exit %pD2\n", file);
outrel:
ncp_inode_close(inode);
return already_read ? already_read : error;
}
static ssize_t
ncp_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
size_t already_written = 0;
size_t bufsize;
int errno;
void *bouncebuffer;
off_t pos;
ncp_dbg(1, "enter %pD2\n", file);
errno = generic_write_checks(iocb, from);
if (errno <= 0)
return errno;
errno = ncp_make_open(inode, O_WRONLY);
if (errno) {
ncp_dbg(1, "open failed, error=%d\n", errno);
return errno;
}
bufsize = NCP_SERVER(inode)->buffer_size;
errno = file_update_time(file);
if (errno)
goto outrel;
bouncebuffer = vmalloc(bufsize);
if (!bouncebuffer) {
errno = -EIO; /* -ENOMEM */
goto outrel;
}
pos = iocb->ki_pos;
while (iov_iter_count(from)) {
int written_this_time;
size_t to_write = min_t(size_t,
bufsize - (pos % bufsize),
iov_iter_count(from));
if (!copy_from_iter_full(bouncebuffer, to_write, from)) {
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;
already_written += written_this_time;
if (written_this_time != to_write)
break;
}
vfree(bouncebuffer);
iocb->ki_pos = pos;
if (pos > i_size_read(inode)) {
inode_lock(inode);
if (pos > i_size_read(inode))
i_size_write(inode, pos);
inode_unlock(inode);
}
ncp_dbg(1, "exit %pD2\n", file);
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)) {
ncp_dbg(1, "failed to close\n");
}
return 0;
}
const struct file_operations ncp_file_operations =
{
.llseek = generic_file_llseek,
.read_iter = ncp_file_read_iter,
.write_iter = ncp_file_write_iter,
.unlocked_ioctl = ncp_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = ncp_compat_ioctl,
#endif
.mmap = ncp_mmap,
.release = ncp_release,
.fsync = ncp_fsync,
};
const struct inode_operations ncp_file_inode_operations =
{
.setattr = ncp_notify_change,
};

76
drivers/staging/ncpfs/getopt.c
View File

@ -1,76 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* getopt.c
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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)
* @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;
}
pr_info("%s: the %s option requires an argument\n",
caller, token);
return -EINVAL;
}
if (opts->has_arg & OPT_INT) {
int rc = kstrtoul(val, 0, value);
if (rc) {
pr_info("%s: invalid numeric value in %s=%s\n",
caller, token, val);
return rc;
}
return opts->val;
}
if (opts->has_arg & OPT_STRING) {
return opts->val;
}
pr_info("%s: unexpected argument %s to the %s option\n",
caller, val, token);
return -EINVAL;
}
}
pr_info("%s: Unrecognized mount option %s\n", caller, token);
return -EOPNOTSUPP;
}

17
drivers/staging/ncpfs/getopt.h
View File

@ -1,17 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#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 */

1067
drivers/staging/ncpfs/inode.c
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File diff suppressed because it is too large Load Diff

923
drivers/staging/ncpfs/ioctl.c
View File

@ -1,923 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* 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/capability.h>
#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/mount.h>
#include <linux/slab.h>
#include <linux/highuid.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
#include <linux/cred.h>
#include <linux/uaccess.h>
#include "ncp_fs.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 (copy_from_user(&info, arg, sizeof(info)))
return -EFAULT;
if (info.version != NCP_GET_FS_INFO_VERSION) {
ncp_dbg(1, "info.version invalid: %d\n", info.version);
return -EINVAL;
}
/* TODO: info.addr = server->m.serv_addr; */
SET_UID(info.mounted_uid, from_kuid_munged(current_user_ns(), 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 (copy_from_user(&info2, arg, sizeof(info2)))
return -EFAULT;
if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
ncp_dbg(1, "info.version invalid: %d\n", info2.version);
return -EINVAL;
}
info2.mounted_uid = from_kuid_munged(current_user_ns(), 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_COMPAT
struct compat_ncp_objectname_ioctl
{
s32 auth_type;
u32 object_name_len;
compat_caddr_t object_name; /* a userspace data, in most cases user name */
};
struct compat_ncp_fs_info_v2 {
s32 version;
u32 mounted_uid;
u32 connection;
u32 buffer_size;
u32 volume_number;
u32 directory_id;
u32 dummy1;
u32 dummy2;
u32 dummy3;
};
struct compat_ncp_ioctl_request {
u32 function;
u32 size;
compat_caddr_t data;
};
struct compat_ncp_privatedata_ioctl
{
u32 len;
compat_caddr_t data; /* ~1000 for NDS */
};
#define NCP_IOC_GET_FS_INFO_V2_32 _IOWR('n', 4, struct compat_ncp_fs_info_v2)
#define NCP_IOC_NCPREQUEST_32 _IOR('n', 1, struct compat_ncp_ioctl_request)
#define NCP_IOC_GETOBJECTNAME_32 _IOWR('n', 9, struct compat_ncp_objectname_ioctl)
#define NCP_IOC_SETOBJECTNAME_32 _IOR('n', 9, struct compat_ncp_objectname_ioctl)
#define NCP_IOC_GETPRIVATEDATA_32 _IOWR('n', 10, struct compat_ncp_privatedata_ioctl)
#define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct compat_ncp_privatedata_ioctl)
static int
ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode,
struct compat_ncp_fs_info_v2 __user * arg)
{
struct compat_ncp_fs_info_v2 info2;
if (copy_from_user(&info2, arg, sizeof(info2)))
return -EFAULT;
if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
ncp_dbg(1, "info.version invalid: %d\n", info2.version);
return -EINVAL;
}
info2.mounted_uid = from_kuid_munged(current_user_ns(), 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;
}
#endif
#define NCP_IOC_GETMOUNTUID16 _IOW('n', 2, u16)
#define NCP_IOC_GETMOUNTUID32 _IOW('n', 2, u32)
#define NCP_IOC_GETMOUNTUID64 _IOW('n', 2, u64)
#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;
int utf8;
int err;
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();
utf8 = 0;
} else if (!strcmp(user.iocharset, "utf8")) {
iocharset = load_nls_default();
utf8 = 1;
} else {
iocharset = load_nls(user.iocharset);
if (!iocharset) {
unload_nls(codepage);
return -EBADRQC;
}
utf8 = 0;
}
mutex_lock(&server->root_setup_lock);
if (server->root_setuped) {
oldset_cp = codepage;
oldset_io = iocharset;
err = -EBUSY;
} else {
if (utf8)
NCP_SET_FLAG(server, NCP_FLAG_UTF8);
else
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;
err = 0;
}
mutex_unlock(&server->root_setup_lock);
unload_nls(oldset_cp);
unload_nls(oldset_io);
return err;
}
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));
mutex_lock(&server->root_setup_lock);
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;
}
mutex_unlock(&server->root_setup_lock);
if (copy_to_user(arg, &user, sizeof(user)))
return -EFAULT;
return 0;
}
#endif /* CONFIG_NCPFS_NLS */
static long __ncp_ioctl(struct inode *inode, 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) {
#ifdef CONFIG_COMPAT
case NCP_IOC_NCPREQUEST_32:
#endif
case NCP_IOC_NCPREQUEST:
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_NCPREQUEST_32) {
struct compat_ncp_ioctl_request request32;
if (copy_from_user(&request32, argp, sizeof(request32)))
return -EFAULT;
request.function = request32.function;
request.size = request32.size;
request.data = compat_ptr(request32.data);
} else
#endif
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);
ncp_dbg(1, "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 (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE))
return -EINVAL;
mutex_lock(&server->root_setup_lock);
if (server->root_setuped)
result = -EBUSY;
else {
result = ncp_conn_logged_in(inode->i_sb);
if (result == 0)
server->root_setuped = 1;
}
mutex_unlock(&server->root_setup_lock);
return result;
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);
#ifdef CONFIG_COMPAT
case NCP_IOC_GET_FS_INFO_V2_32:
return ncp_get_compat_fs_info_v2(server, inode, argp);
#endif
/* we have too many combinations of CONFIG_COMPAT,
* CONFIG_64BIT and CONFIG_UID16, so just handle
* any of the possible ioctls */
case NCP_IOC_GETMOUNTUID16:
{
u16 uid;
SET_UID(uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid));
if (put_user(uid, (u16 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETMOUNTUID32:
{
uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
if (put_user(uid, (u32 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETMOUNTUID64:
{
uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
if (put_user(uid, (u64 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETROOT:
{
struct ncp_setroot_ioctl sr;
result = -EACCES;
mutex_lock(&server->root_setup_lock);
if (server->m.mounted_vol[0]) {
struct dentry* dentry = inode->i_sb->s_root;
if (dentry) {
struct inode* s_inode = d_inode(dentry);
if (s_inode) {
sr.volNumber = NCP_FINFO(s_inode)->volNumber;
sr.dirEntNum = NCP_FINFO(s_inode)->dirEntNum;
sr.namespace = server->name_space[sr.volNumber];
result = 0;
} else
ncp_dbg(1, "d_inode(s_root)==NULL\n");
} else
ncp_dbg(1, "s_root==NULL\n");
} else {
sr.volNumber = -1;
sr.namespace = 0;
sr.dirEntNum = 0;
result = 0;
}
mutex_unlock(&server->root_setup_lock);
if (!result && copy_to_user(argp, &sr, sizeof(sr)))
result = -EFAULT;
return result;
}
case NCP_IOC_SETROOT:
{
struct ncp_setroot_ioctl sr;
__u32 vnum;
__le32 de;
__le32 dosde;
struct dentry* dentry;
if (copy_from_user(&sr, argp, sizeof(sr)))
return -EFAULT;
mutex_lock(&server->root_setup_lock);
if (server->root_setuped)
result = -EBUSY;
else {
if (sr.volNumber < 0) {
server->m.mounted_vol[0] = 0;
vnum = NCP_NUMBER_OF_VOLUMES;
de = 0;
dosde = 0;
result = 0;
} else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
result = -EINVAL;
} else if (ncp_mount_subdir(server, sr.volNumber,
sr.namespace, sr.dirEntNum,
&vnum, &de, &dosde)) {
result = -ENOENT;
} else
result = 0;
if (result == 0) {
dentry = inode->i_sb->s_root;
if (dentry) {
struct inode* s_inode = d_inode(dentry);
if (s_inode) {
NCP_FINFO(s_inode)->volNumber = vnum;
NCP_FINFO(s_inode)->dirEntNum = de;
NCP_FINFO(s_inode)->DosDirNum = dosde;
server->root_setuped = 1;
} else {
ncp_dbg(1, "d_inode(s_root)==NULL\n");
result = -EIO;
}
} else {
ncp_dbg(1, "s_root==NULL\n");
result = -EIO;
}
}
}
mutex_unlock(&server->root_setup_lock);
return result;
}
#ifdef CONFIG_NCPFS_PACKET_SIGNING
case NCP_IOC_SIGN_INIT:
{
struct ncp_sign_init sign;
if (argp)
if (copy_from_user(&sign, argp, sizeof(sign)))
return -EFAULT;
ncp_lock_server(server);
mutex_lock(&server->rcv.creq_mutex);
if (argp) {
if (server->sign_wanted) {
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;
}
mutex_unlock(&server->rcv.creq_mutex);
ncp_unlock_server(server);
return 0;
}
case NCP_IOC_SIGN_WANTED:
{
int state;
ncp_lock_server(server);
state = server->sign_wanted;
ncp_unlock_server(server);
if (put_user(state, (int __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_SET_SIGN_WANTED:
{
int newstate;
/* get only low 8 bits... */
if (get_user(newstate, (unsigned char __user *)argp))
return -EFAULT;
result = 0;
ncp_lock_server(server);
if (server->sign_active) {
/* cannot turn signatures OFF when active */
if (!newstate)
result = -EINVAL;
} else {
server->sign_wanted = newstate != 0;
}
ncp_unlock_server(server);
return result;
}
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
case NCP_IOC_LOCKUNLOCK:
{
struct ncp_lock_ioctl rqdata;
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)
return -EINVAL;
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 = -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 */
#ifdef CONFIG_COMPAT
case NCP_IOC_GETOBJECTNAME_32:
{
struct compat_ncp_objectname_ioctl user;
size_t outl;
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
down_read(&server->auth_rwsem);
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;
result = 0;
if (outl) {
if (copy_to_user(compat_ptr(user.object_name),
server->auth.object_name,
outl))
result = -EFAULT;
}
up_read(&server->auth_rwsem);
if (!result && copy_to_user(argp, &user, sizeof(user)))
result = -EFAULT;
return result;
}
#endif
case NCP_IOC_GETOBJECTNAME:
{
struct ncp_objectname_ioctl user;
size_t outl;
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
down_read(&server->auth_rwsem);
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;
result = 0;
if (outl) {
if (copy_to_user(user.object_name,
server->auth.object_name,
outl))
result = -EFAULT;
}
up_read(&server->auth_rwsem);
if (!result && copy_to_user(argp, &user, sizeof(user)))
result = -EFAULT;
return result;
}
#ifdef CONFIG_COMPAT
case NCP_IOC_SETOBJECTNAME_32:
#endif
case NCP_IOC_SETOBJECTNAME:
{
struct ncp_objectname_ioctl user;
void* newname;
void* oldname;
size_t oldnamelen;
void* oldprivate;
size_t oldprivatelen;
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_SETOBJECTNAME_32) {
struct compat_ncp_objectname_ioctl user32;
if (copy_from_user(&user32, argp, sizeof(user32)))
return -EFAULT;
user.auth_type = user32.auth_type;
user.object_name_len = user32.object_name_len;
user.object_name = compat_ptr(user32.object_name);
} else
#endif
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 = memdup_user(user.object_name,
user.object_name_len);
if (IS_ERR(newname))
return PTR_ERR(newname);
} else {
newname = NULL;
}
down_write(&server->auth_rwsem);
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;
up_write(&server->auth_rwsem);
kfree(oldprivate);
kfree(oldname);
return 0;
}
#ifdef CONFIG_COMPAT
case NCP_IOC_GETPRIVATEDATA_32:
#endif
case NCP_IOC_GETPRIVATEDATA:
{
struct ncp_privatedata_ioctl user;
size_t outl;
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
struct compat_ncp_privatedata_ioctl user32;
if (copy_from_user(&user32, argp, sizeof(user32)))
return -EFAULT;
user.len = user32.len;
user.data = compat_ptr(user32.data);
} else
#endif
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
down_read(&server->auth_rwsem);
outl = user.len;
user.len = server->priv.len;
if (outl > user.len) outl = user.len;
result = 0;
if (outl) {
if (copy_to_user(user.data,
server->priv.data,
outl))
result = -EFAULT;
}
up_read(&server->auth_rwsem);
if (result)
return result;
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
struct compat_ncp_privatedata_ioctl user32;
user32.len = user.len;
user32.data = (unsigned long) user.data;
if (copy_to_user(argp, &user32, sizeof(user32)))
return -EFAULT;
} else
#endif
if (copy_to_user(argp, &user, sizeof(user)))
return -EFAULT;
return 0;
}
#ifdef CONFIG_COMPAT
case NCP_IOC_SETPRIVATEDATA_32:
#endif
case NCP_IOC_SETPRIVATEDATA:
{
struct ncp_privatedata_ioctl user;
void* new;
void* old;
size_t oldlen;
#ifdef CONFIG_COMPAT
if (cmd == NCP_IOC_SETPRIVATEDATA_32) {
struct compat_ncp_privatedata_ioctl user32;
if (copy_from_user(&user32, argp, sizeof(user32)))
return -EFAULT;
user.len = user32.len;
user.data = compat_ptr(user32.data);
} else
#endif
if (copy_from_user(&user, argp, sizeof(user)))
return -EFAULT;
if (user.len > NCP_PRIVATE_DATA_MAX_LEN)
return -ENOMEM;
if (user.len) {
new = memdup_user(user.data, user.len);
if (IS_ERR(new))
return PTR_ERR(new);
} else {
new = NULL;
}
down_write(&server->auth_rwsem);
old = server->priv.data;
oldlen = server->priv.len;
server->priv.len = user.len;
server->priv.data = new;
up_write(&server->auth_rwsem);
kfree(old);
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:
{
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;
atomic_set(&server->dentry_ttl, user);
return 0;
}
case NCP_IOC_GETDENTRYTTL:
{
u_int32_t user = (atomic_read(&server->dentry_ttl) * 1000) / HZ;
if (copy_to_user(argp, &user, sizeof(user)))
return -EFAULT;
return 0;
}
}
return -EINVAL;
}
long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = file_inode(filp);
struct ncp_server *server = NCP_SERVER(inode);
kuid_t uid = current_uid();
int need_drop_write = 0;
long ret;
switch (cmd) {
case NCP_IOC_SETCHARSETS:
case NCP_IOC_CONN_LOGGED_IN:
case NCP_IOC_SETROOT:
if (!capable(CAP_SYS_ADMIN)) {
ret = -EPERM;
goto out;
}
break;
}
if (!uid_eq(server->m.mounted_uid, uid)) {
switch (cmd) {
/*
* Only mount owner can issue these ioctls. Information
* necessary to authenticate to other NDS servers are
* stored here.
*/
case NCP_IOC_GETOBJECTNAME:
case NCP_IOC_SETOBJECTNAME:
case NCP_IOC_GETPRIVATEDATA:
case NCP_IOC_SETPRIVATEDATA:
#ifdef CONFIG_COMPAT
case NCP_IOC_GETOBJECTNAME_32:
case NCP_IOC_SETOBJECTNAME_32:
case NCP_IOC_GETPRIVATEDATA_32:
case NCP_IOC_SETPRIVATEDATA_32:
#endif
ret = -EACCES;
goto out;
/*
* These require write access on the inode if user id
* does not match. Note that they do not write to the
* file... But old code did mnt_want_write, so I keep
* it as is. Of course not for mountpoint owner, as
* that breaks read-only mounts altogether as ncpmount
* needs working NCP_IOC_NCPREQUEST and
* NCP_IOC_GET_FS_INFO. Some of these codes (setdentryttl,
* signinit, setsignwanted) should be probably restricted
* to owner only, or even more to CAP_SYS_ADMIN).
*/
case NCP_IOC_GET_FS_INFO:
case NCP_IOC_GET_FS_INFO_V2:
case NCP_IOC_NCPREQUEST:
case NCP_IOC_SETDENTRYTTL:
case NCP_IOC_SIGN_INIT:
case NCP_IOC_LOCKUNLOCK:
case NCP_IOC_SET_SIGN_WANTED:
#ifdef CONFIG_COMPAT
case NCP_IOC_GET_FS_INFO_V2_32:
case NCP_IOC_NCPREQUEST_32:
#endif
ret = mnt_want_write_file(filp);
if (ret)
goto out;
need_drop_write = 1;
ret = inode_permission(inode, MAY_WRITE);
if (ret)
goto outDropWrite;
break;
/*
* Read access required.
*/
case NCP_IOC_GETMOUNTUID16:
case NCP_IOC_GETMOUNTUID32:
case NCP_IOC_GETMOUNTUID64:
case NCP_IOC_GETROOT:
case NCP_IOC_SIGN_WANTED:
ret = inode_permission(inode, MAY_READ);
if (ret)
goto out;
break;
/*
* Anybody can read these.
*/
case NCP_IOC_GETCHARSETS:
case NCP_IOC_GETDENTRYTTL:
default:
/* Three codes below are protected by CAP_SYS_ADMIN above. */
case NCP_IOC_SETCHARSETS:
case NCP_IOC_CONN_LOGGED_IN:
case NCP_IOC_SETROOT:
break;
}
}
ret = __ncp_ioctl(inode, cmd, arg);
outDropWrite:
if (need_drop_write)
mnt_drop_write_file(filp);
out:
return ret;
}
#ifdef CONFIG_COMPAT
long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
arg = (unsigned long) compat_ptr(arg);
ret = ncp_ioctl(file, cmd, arg);
return ret;
}
#endif

125
drivers/staging/ncpfs/mmap.c
View File

@ -1,125 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* 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/gfp.h>
#include <linux/mm.h>
#include <linux/shm.h>
#include <linux/errno.h>
#include <linux/mman.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/memcontrol.h>
#include <linux/uaccess.h>
#include "ncp_fs.h"
/*
* Fill in the supplied page for mmap
* XXX: how are we excluding truncate/invalidate here? Maybe need to lock
* page?
*/
static int ncp_file_mmap_fault(struct vm_fault *vmf)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
char *pg_addr;
unsigned int already_read;
unsigned int count;
int bufsize;
int pos; /* XXX: loff_t ? */
/*
* ncpfs has nothing against high pages as long
* as recvmsg and memset works on it
*/
vmf->page = alloc_page(GFP_HIGHUSER);
if (!vmf->page)
return VM_FAULT_OOM;
pg_addr = kmap(vmf->page);
pos = vmf->pgoff << PAGE_SHIFT;
count = PAGE_SIZE;
/* 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(vmf->page);
kunmap(vmf->page);
/*
* If I understand ncp_read_kernel() properly, the above always
* fetches from the network, here the analogue of disk.
* -- nyc
*/
count_vm_event(PGMAJFAULT);
count_memcg_event_mm(vmf->vma->vm_mm, PGMAJFAULT);
return VM_FAULT_MAJOR;
}
static const struct vm_operations_struct ncp_file_mmap =
{
.fault = ncp_file_mmap_fault,
};
/* 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_inode(file);
ncp_dbg(1, "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_pages(vma) + vma->vm_pgoff
> (1U << (32 - PAGE_SHIFT)))
return -EFBIG;
vma->vm_ops = &ncp_file_mmap;
file_accessed(file);
return 0;
}

101
drivers/staging/ncpfs/ncp_fs.h
View File

@ -1,101 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/ncp_fs.h>
#include "ncp_fs_i.h"
#include "ncp_fs_sb.h"
#undef NCPFS_PARANOIA
#ifdef NCPFS_PARANOIA
#define ncp_vdbg(fmt, ...) \
pr_debug(fmt, ##__VA_ARGS__)
#else
#define ncp_vdbg(fmt, ...) \
do { \
if (0) \
pr_debug(fmt, ##__VA_ARGS__); \
} while (0)
#endif
#ifndef DEBUG_NCP
#define DEBUG_NCP 0
#endif
#if DEBUG_NCP > 0 && !defined(DEBUG)
#define DEBUG
#endif
#define ncp_dbg(level, fmt, ...) \
do { \
if (level <= DEBUG_NCP) \
pr_debug(fmt, ##__VA_ARGS__); \
} while (0)
#define NCP_MAX_RPC_TIMEOUT (6*HZ)
struct ncp_entry_info {
struct nw_info_struct i;
ino_t ino;
int opened;
int access;
unsigned int volume;
__u8 file_handle[6];
};
static inline struct ncp_server *NCP_SBP(const struct super_block *sb)
{
return sb->s_fs_info;
}
#define NCP_SERVER(inode) NCP_SBP((inode)->i_sb)
static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode)
{
return container_of(inode, struct ncp_inode_info, vfs_inode);
}
/* linux/fs/ncpfs/inode.c */
int ncp_notify_change(struct dentry *, struct iattr *);
struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *);
void ncp_update_inode(struct inode *, struct ncp_entry_info *);
void ncp_update_inode2(struct inode *, struct ncp_entry_info *);
/* linux/fs/ncpfs/dir.c */
extern const struct inode_operations ncp_dir_inode_operations;
extern const struct file_operations ncp_dir_operations;
extern const struct dentry_operations ncp_dentry_operations;
int ncp_conn_logged_in(struct super_block *);
int ncp_date_dos2unix(__le16 time, __le16 date);
void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date);
/* linux/fs/ncpfs/ioctl.c */
long ncp_ioctl(struct file *, unsigned int, unsigned long);
long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
/* linux/fs/ncpfs/sock.c */
int ncp_request2(struct ncp_server *server, int function,
void* reply, int max_reply_size);
static inline int ncp_request(struct ncp_server *server, int function) {
return ncp_request2(server, function, server->packet, server->packet_size);
}
int ncp_connect(struct ncp_server *server);
int ncp_disconnect(struct ncp_server *server);
void ncp_lock_server(struct ncp_server *server);
void ncp_unlock_server(struct ncp_server *server);
/* linux/fs/ncpfs/symlink.c */
#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
extern const struct address_space_operations ncp_symlink_aops;
int ncp_symlink(struct inode*, struct dentry*, const char*);
#endif
/* linux/fs/ncpfs/file.c */
extern const struct inode_operations ncp_file_inode_operations;
extern const struct file_operations ncp_file_operations;
int ncp_make_open(struct inode *, int);
/* linux/fs/ncpfs/mmap.c */
int ncp_mmap(struct file *, struct vm_area_struct *);
/* linux/fs/ncpfs/ncplib_kernel.c */
int ncp_make_closed(struct inode *);
#include "ncplib_kernel.h"

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drivers/staging/ncpfs/ncp_fs_i.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ncp_fs_i.h
*
* Copyright (C) 1995 Volker Lendecke
*
*/
#ifndef _LINUX_NCP_FS_I
#define _LINUX_NCP_FS_I
/*
* This is the ncpfs part of the inode structure. This must contain
* all the information we need to work with an inode after creation.
*/
struct ncp_inode_info {
__le32 dirEntNum;
__le32 DosDirNum;
__u8 volNumber;
__le32 nwattr;
struct mutex open_mutex;
atomic_t opened;
int access;
int flags;
#define NCPI_KLUDGE_SYMLINK 0x0001
#define NCPI_DIR_CACHE 0x0002
__u8 file_handle[6];
struct inode vfs_inode;
};
#endif /* _LINUX_NCP_FS_I */

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drivers/staging/ncpfs/ncp_fs_sb.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ncp_fs_sb.h
*
* Copyright (C) 1995, 1996 by Volker Lendecke
*
*/
#ifndef _NCP_FS_SB
#define _NCP_FS_SB
#include <linux/types.h>
#include <linux/ncp_mount.h>
#include <linux/net.h>
#include <linux/mutex.h>
#include <linux/backing-dev.h>
#include <linux/workqueue.h>
#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */
struct sock;
struct ncp_mount_data_kernel {
unsigned long flags; /* NCP_MOUNT_* flags */
unsigned int int_flags; /* internal flags */
#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001
kuid_t mounted_uid; /* Who may umount() this filesystem? */
struct pid *wdog_pid; /* Who cares for our watchdog packets? */
unsigned int ncp_fd; /* The socket to the ncp port */
unsigned int time_out; /* How long should I wait after
sending a NCP request? */
unsigned int retry_count; /* And how often should I retry? */
unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
kuid_t uid;
kgid_t gid;
umode_t file_mode;
umode_t dir_mode;
int info_fd;
};
struct ncp_server {
struct rcu_head rcu;
struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
interest for us later, so we store
it completely. */
__u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
struct socket *ncp_sock;/* ncp socket */
struct socket *info_sock;
u8 sequence;
u8 task;
u16 connection; /* Remote connection number */
u8 completion; /* Status message from server */
u8 conn_status; /* Bit 4 = 1 ==> Server going down, no
requests allowed anymore.
Bit 0 = 1 ==> Server is down. */
int buffer_size; /* Negotiated bufsize */
int reply_size; /* Size of last reply */
int packet_size;
unsigned char *packet; /* Here we prepare requests and
receive replies */
unsigned char *txbuf; /* Storage for current request */
unsigned char *rxbuf; /* Storage for reply to current request */
int lock; /* To prevent mismatch in protocols. */
struct mutex mutex;
int current_size; /* for packet preparation */
int has_subfunction;
int ncp_reply_size;
int root_setuped;
struct mutex root_setup_lock;
/* info for packet signing */
int sign_wanted; /* 1=Server needs signed packets */
int sign_active; /* 0=don't do signing, 1=do */
char sign_root[8]; /* generated from password and encr. key */
char sign_last[16];
/* Authentication info: NDS or BINDERY, username */
struct {
int auth_type;
size_t object_name_len;
void* object_name;
int object_type;
} auth;
/* Password info */
struct {
size_t len;
void* data;
} priv;
struct rw_semaphore auth_rwsem;
/* nls info: codepage for volume and charset for I/O */
struct nls_table *nls_vol;
struct nls_table *nls_io;
/* maximum age in jiffies */
atomic_t dentry_ttl;
/* miscellaneous */
unsigned int flags;
spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
void (*data_ready)(struct sock* sk);
void (*error_report)(struct sock* sk);
void (*write_space)(struct sock* sk); /* STREAM mode only */
struct {
struct work_struct tq; /* STREAM/DGRAM: data/error ready */
struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */
struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */
unsigned int state; /* STREAM only: receiver state */
struct {
__u32 magic __packed;
__u32 len __packed;
__u16 type __packed;
__u16 p1 __packed;
__u16 p2 __packed;
__u16 p3 __packed;
__u16 type2 __packed;
} buf; /* STREAM only: temporary buffer */
unsigned char* ptr; /* STREAM only: pointer to data */
size_t len; /* STREAM only: length of data to receive */
} rcv;
struct {
struct list_head requests; /* STREAM only: queued requests */
struct work_struct tq; /* STREAM only: transmitter ready */
struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */
} tx;
struct timer_list timeout_tm; /* DGRAM only: timeout timer */
struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */
int timeout_last; /* DGRAM only: current timeout length */
int timeout_retries; /* DGRAM only: retries left */
struct {
size_t len;
__u8 data[128];
} unexpected_packet;
};
extern void ncp_tcp_rcv_proc(struct work_struct *work);
extern void ncp_tcp_tx_proc(struct work_struct *work);
extern void ncpdgram_rcv_proc(struct work_struct *work);
extern void ncpdgram_timeout_proc(struct work_struct *work);
extern void ncpdgram_timeout_call(struct timer_list *t);
extern void ncp_tcp_data_ready(struct sock* sk);
extern void ncp_tcp_write_space(struct sock* sk);
extern void ncp_tcp_error_report(struct sock* sk);
#define NCP_FLAG_UTF8 1
#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag))
#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag))
#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag))
static inline int ncp_conn_valid(struct ncp_server *server)
{
return ((server->conn_status & 0x11) == 0);
}
static inline void ncp_invalidate_conn(struct ncp_server *server)
{
server->conn_status |= 0x01;
}
#endif

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drivers/staging/ncpfs/ncplib_kernel.c
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drivers/staging/ncpfs/ncplib_kernel.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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/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 <linux/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 */
#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,
struct iov_iter *, 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(const void* src, struct nw_info_struct* target);
int ncp_obtain_info(struct ncp_server *server, struct inode *, const char *,
struct nw_info_struct *target);
int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target);
int ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns);
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 *, const char *);
int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, const 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_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 *, const char *, struct inode *, const 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,
umode_t 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(sb) (NCP_SBP(sb)->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(sb) 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(const 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) atomic_read(&(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 - NCP_MAX_AGE(server);
}
static inline void
ncp_new_dentry(struct dentry* dentry)
{
dentry->d_time = jiffies;
}
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_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 */

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drivers/staging/ncpfs/ncpsign_kernel.c
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// SPDX-License-Identifier: GPL-2.0
/*
* ncpsign_kernel.c
*
* Arne de Bruijn (arne@knoware.nl), 1997
*
*/
#ifdef CONFIG_NCPFS_PACKET_SIGNING
#include <linux/string.h>
#include <linux/ncp.h>
#include <linux/bitops.h>
#include "ncp_fs.h"
#include "ncpsign_kernel.h"
/* i386: 32-bit, little endian, handles mis-alignment */
#ifdef __i386__
#define GET_LE32(p) (*(const int *)(p))
#define PUT_LE32(p,v) { *(int *)(p)=v; }
#else
/* from include/ncplib.h */
#define BVAL(buf,pos) (((const __u8 *)(buf))[pos])
#define PVAL(buf,pos) ((unsigned)BVAL(buf,pos))
#define BSET(buf,pos,val) (((__u8 *)(buf))[pos] = (val))
static inline __u16
WVAL_LH(const __u8 * buf, int pos)
{
return PVAL(buf, pos) | PVAL(buf, pos + 1) << 8;
}
static inline __u32
DVAL_LH(const __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=(unsigned 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 */

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drivers/staging/ncpfs/ncpsign_kernel.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* ncpsign_kernel.h
*
* Arne de Bruijn (arne@knoware.nl), 1997
*
*/
#ifndef _NCPSIGN_KERNEL_H
#define _NCPSIGN_KERNEL_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

855
drivers/staging/ncpfs/sock.c
View File

@ -1,855 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* 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
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/time.h>
#include <linux/errno.h>
#include <linux/socket.h>
#include <linux/fcntl.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/sched/signal.h>
#include <linux/uaccess.h>
#include <linux/in.h>
#include <linux/net.h>
#include <linux/mm.h>
#include <linux/netdevice.h>
#include <linux/signal.h>
#include <linux/slab.h>
#include <net/scm.h>
#include <net/sock.h>
#include <linux/ipx.h>
#include <linux/poll.h>
#include <linux/file.h>
#include "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};
iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &iov, 1, size);
return sock_recvmsg(sock, &msg, flags);
}
static int _send(struct socket *sock, const void *buff, int len)
{
struct msghdr msg = { .msg_flags = 0 };
struct kvec vec = {.iov_base = (void *)buff, .iov_len = len};
iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &vec, 1, len);
return sock_sendmsg(sock, &msg);
}
struct ncp_request_reply {
struct list_head req;
wait_queue_head_t wq;
atomic_t refs;
unsigned char* reply_buf;
size_t datalen;
int result;
enum { RQ_DONE, RQ_INPROGRESS, RQ_QUEUED, RQ_IDLE, RQ_ABANDONED } status;
struct iov_iter from;
struct kvec tx_iov[3];
u_int16_t tx_type;
u_int32_t sign[6];
};
static inline struct ncp_request_reply* ncp_alloc_req(void)
{
struct ncp_request_reply *req;
req = kmalloc(sizeof(struct ncp_request_reply), GFP_KERNEL);
if (!req)
return NULL;
init_waitqueue_head(&req->wq);
atomic_set(&req->refs, (1));
req->status = RQ_IDLE;
return req;
}
static void ncp_req_get(struct ncp_request_reply *req)
{
atomic_inc(&req->refs);
}
static void ncp_req_put(struct ncp_request_reply *req)
{
if (atomic_dec_and_test(&req->refs))
kfree(req);
}
void ncp_tcp_data_ready(struct sock *sk)
{
struct ncp_server *server = sk->sk_user_data;
server->data_ready(sk);
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(struct timer_list *t)
{
struct ncp_server *server = from_timer(server, t, timeout_tm);
schedule_work(&server->timeout_tq);
}
static inline void ncp_finish_request(struct ncp_server *server, struct ncp_request_reply *req, int result)
{
req->result = result;
if (req->status != RQ_ABANDONED)
memcpy(req->reply_buf, server->rxbuf, req->datalen);
req->status = RQ_DONE;
wake_up_all(&req->wq);
ncp_req_put(req);
}
static void __abort_ncp_connection(struct ncp_server *server)
{
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);
ncp_finish_request(server, req, -EIO);
}
req = server->rcv.creq;
if (req) {
server->rcv.creq = NULL;
ncp_finish_request(server, req, -EIO);
server->rcv.ptr = NULL;
server->rcv.state = 0;
}
req = server->tx.creq;
if (req) {
server->tx.creq = NULL;
ncp_finish_request(server, 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(server, req, err);
break;
case RQ_INPROGRESS:
req->status = RQ_ABANDONED;
break;
case RQ_ABANDONED:
break;
}
}
static inline void ncp_abort_request(struct ncp_server *server, struct ncp_request_reply *req, int err)
{
mutex_lock(&server->rcv.creq_mutex);
__ncp_abort_request(server, req, err);
mutex_unlock(&server->rcv.creq_mutex);
}
static inline void __ncptcp_abort(struct ncp_server *server)
{
__abort_ncp_connection(server);
}
static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req)
{
struct msghdr msg = { .msg_iter = req->from, .msg_flags = MSG_DONTWAIT };
return sock_sendmsg(sock, &msg);
}
static void __ncptcp_try_send(struct ncp_server *server)
{
struct ncp_request_reply *rq;
struct msghdr msg = { .msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT };
int result;
rq = server->tx.creq;
if (!rq)
return;
msg.msg_iter = rq->from;
result = sock_sendmsg(server->ncp_sock, &msg);
if (result == -EAGAIN)
return;
if (result < 0) {
pr_err("tcp: Send failed: %d\n", result);
__ncp_abort_request(server, rq, result);
return;
}
if (!msg_data_left(&msg)) {
server->rcv.creq = rq;
server->tx.creq = NULL;
return;
}
rq->from = msg.msg_iter;
}
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, len = req->tx_iov[1].iov_len;
struct ncp_request_header *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,
len - sizeof(struct ncp_request_header) + 1,
cpu_to_le32(len), req->sign);
if (signlen) {
/* NCP over UDP appends signature */
req->tx_iov[2].iov_base = req->sign;
req->tx_iov[2].iov_len = signlen;
}
iov_iter_kvec(&req->from, WRITE | ITER_KVEC,
req->tx_iov + 1, signlen ? 2 : 1, len + 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, len = req->tx_iov[1].iov_len;
struct ncp_request_header *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,
len - sizeof(struct ncp_request_header) + 1,
cpu_to_be32(len + 24), req->sign + 4) + 16;
req->sign[0] = htonl(NCP_TCP_XMIT_MAGIC);
req->sign[1] = htonl(len + signlen);
req->sign[2] = htonl(NCP_TCP_XMIT_VERSION);
req->sign[3] = htonl(req->datalen + 8);
/* NCP over TCP prepends signature */
req->tx_iov[0].iov_base = req->sign;
req->tx_iov[0].iov_len = signlen;
iov_iter_kvec(&req->from, WRITE | ITER_KVEC,
req->tx_iov, 2, len + signlen);
server->tx.creq = req;
__ncptcp_try_send(server);
}
static inline void __ncp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
/* we copy the data so that we do not depend on the caller
staying alive */
memcpy(server->txbuf, req->tx_iov[1].iov_base, req->tx_iov[1].iov_len);
req->tx_iov[1].iov_base = server->txbuf;
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)
{
mutex_lock(&server->rcv.creq_mutex);
if (!ncp_conn_valid(server)) {
mutex_unlock(&server->rcv.creq_mutex);
pr_err("tcp: Server died\n");
return -EIO;
}
ncp_req_get(req);
if (server->tx.creq || server->rcv.creq) {
req->status = RQ_QUEUED;
list_add_tail(&req->req, &server->tx.requests);
mutex_unlock(&server->rcv.creq_mutex);
return 0;
}
__ncp_start_request(server, req);
mutex_unlock(&server->rcv.creq_mutex);
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 msghdr msg = { .msg_flags = MSG_NOSIGNAL };
__be32 hdr[2] = {cpu_to_be32(len + 8), cpu_to_be32(id)};
struct kvec iov[2] = {
{.iov_base = hdr, .iov_len = 8},
{.iov_base = (void *)data, .iov_len = len},
};
iov_iter_kvec(&msg.msg_iter, ITER_KVEC | WRITE,
iov, 2, len + 8);
sock_sendmsg(server->info_sock, &msg);
}
}
void ncpdgram_rcv_proc(struct work_struct *work)
{
struct ncp_server *server =
container_of(work, struct ncp_server, rcv.tq);
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) {
ncp_dbg(1, "recv failed with %d\n", result);
continue;
}
if (result < 10) {
ncp_dbg(1, "too short (%u) watchdog packet\n", result);
continue;
}
if (buf[9] != '?') {
ncp_dbg(1, "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;
}
mutex_lock(&server->rcv.creq_mutex);
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, server->rxbuf, 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, server->rxbuf + hdrl, result - hdrl, cpu_to_le32(result), server->rxbuf + result)) {
pr_info("Signature violation\n");
result = -EIO;
}
}
}
#endif
del_timer(&server->timeout_tm);
server->rcv.creq = NULL;
ncp_finish_request(server, req, result);
__ncp_next_request(server);
mutex_unlock(&server->rcv.creq_mutex);
continue;
}
}
mutex_unlock(&server->rcv.creq_mutex);
}
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(struct work_struct *work)
{
struct ncp_server *server =
container_of(work, struct ncp_server, timeout_tq);
mutex_lock(&server->rcv.creq_mutex);
__ncpdgram_timeout_proc(server);
mutex_unlock(&server->rcv.creq_mutex);
}
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) {
pr_err("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) {
pr_err("tcp: error in recvmsg: %d\n", result);
} else {
ncp_dbg(1, "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)) {
pr_err("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) {
pr_err("tcp: Unexpected reply len %d\n", datalen);
__ncptcp_abort(server);
return -EIO;
}
#ifdef CONFIG_NCPFS_PACKET_SIGNING
if (server->sign_active) {
if (datalen < 18) {
pr_err("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;
}
ncp_dbg(1, "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) {
ncp_dbg(1, "Reply without appropriate request\n");
goto skipdata2;
}
if (datalen > req->datalen + 8) {
pr_err("tcp: Unexpected reply len %d (expected at most %zd)\n", datalen, req->datalen + 8);
server->rcv.state = 3;
goto skipdata;
}
req->datalen = datalen - 8;
((struct ncp_reply_header*)server->rxbuf)->type = NCP_REPLY;
server->rcv.ptr = server->rxbuf + 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 (((struct ncp_reply_header*)server->rxbuf)->sequence != server->sequence) {
pr_err("tcp: Bad sequence number\n");
__ncp_abort_request(server, req, -EIO);
return -EIO;
}
if ((((struct ncp_reply_header*)server->rxbuf)->conn_low | (((struct ncp_reply_header*)server->rxbuf)->conn_high << 8)) != server->connection) {
pr_err("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, server->rxbuf + 6, req->datalen - 6, cpu_to_be32(req->datalen + 16), &server->rcv.buf.type)) {
pr_err("tcp: Signature violation\n");
__ncp_abort_request(server, req, -EIO);
return -EIO;
}
}
#endif
ncp_finish_request(server, 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, 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(struct work_struct *work)
{
struct ncp_server *server =
container_of(work, struct ncp_server, rcv.tq);
mutex_lock(&server->rcv.creq_mutex);
__ncptcp_rcv_proc(server);
mutex_unlock(&server->rcv.creq_mutex);
}
void ncp_tcp_tx_proc(struct work_struct *work)
{
struct ncp_server *server =
container_of(work, struct ncp_server, tx.tq);
mutex_lock(&server->rcv.creq_mutex);
__ncptcp_try_send(server);
mutex_unlock(&server->rcv.creq_mutex);
}
static int do_ncp_rpc_call(struct ncp_server *server, int size,
unsigned char* reply_buf, int max_reply_size)
{
int result;
struct ncp_request_reply *req;
req = ncp_alloc_req();
if (!req)
return -ENOMEM;
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_type = *(u_int16_t*)server->packet;
result = ncp_add_request(server, req);
if (result < 0)
goto out;
if (wait_event_interruptible(req->wq, req->status == RQ_DONE)) {
ncp_abort_request(server, req, -EINTR);
result = -EINTR;
goto out;
}
result = req->result;
out:
ncp_req_put(req);
return 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) {
pr_err("Server not locked!\n");
return -EIO;
}
if (!ncp_conn_valid(server)) {
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);
}
ncp_dbg(2, "do_ncp_rpc_call returned %d\n", result);
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) {
ncp_dbg(1, "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)
ncp_vdbg("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)
{
mutex_lock(&server->mutex);
if (server->lock)
pr_warn("%s: was locked!\n", __func__);
server->lock = 1;
}
void ncp_unlock_server(struct ncp_server *server)
{
if (!server->lock) {
pr_warn("%s: was not locked!\n", __func__);
return;
}
server->lock = 0;
mutex_unlock(&server->mutex);
}

182
drivers/staging/ncpfs/symlink.c
View File

@ -1,182 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* 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/uaccess.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/stat.h>
#include "ncp_fs.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 = 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...
*/
const 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;
umode_t mode;
__le32 attr;
unsigned int hdr;
ncp_dbg(1, "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 = 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=d_inode(dentry);
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 ----- */