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authorStephen Hemminger <stephen@networkplumber.org>2017-11-14 08:37:15 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-28 13:55:01 +0100
commit1bb8155080c652c4853e6228f8f0d262b3049699 (patch)
tree04bcb6824789224bb16dd9a35fd5fc454881d616 /fs/ncpfs/ioctl.c
parente02554e9a4338c58e75fdfb0ef908a5adc86cba5 (diff)
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ncpfs: move net/ncpfs to drivers/staging/ncpfs
The Netware Core Protocol is a file system that talks to Netware clients over IPX. Since IPX has been dead for many years move the file system into staging for eventual interment. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ncpfs/ioctl.c')
-rw-r--r--fs/ncpfs/ioctl.c923
1 files changed, 0 insertions, 923 deletions
diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
deleted file mode 100644
index d378b98cd7b6..000000000000
--- a/fs/ncpfs/ioctl.c
+++ /dev/null
@@ -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