+++ /dev/null
-/*
- * inode.c
- *
- * 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 Wolfram Pienkoss for NLS
- * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-
-#include <linux/uaccess.h>
-#include <asm/byteorder.h>
-
-#include <linux/time.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/file.h>
-#include <linux/fcntl.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/vfs.h>
-#include <linux/mount.h>
-#include <linux/seq_file.h>
-#include <linux/sched/signal.h>
-#include <linux/namei.h>
-
-#include <net/sock.h>
-
-#include "ncp_fs.h"
-#include "getopt.h"
-
-#define NCP_DEFAULT_FILE_MODE 0600
-#define NCP_DEFAULT_DIR_MODE 0700
-#define NCP_DEFAULT_TIME_OUT 10
-#define NCP_DEFAULT_RETRY_COUNT 20
-
-static void ncp_evict_inode(struct inode *);
-static void ncp_put_super(struct super_block *);
-static int ncp_statfs(struct dentry *, struct kstatfs *);
-static int ncp_show_options(struct seq_file *, struct dentry *);
-
-static struct kmem_cache * ncp_inode_cachep;
-
-static struct inode *ncp_alloc_inode(struct super_block *sb)
-{
- struct ncp_inode_info *ei;
- ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
- if (!ei)
- return NULL;
- return &ei->vfs_inode;
-}
-
-static void ncp_i_callback(struct rcu_head *head)
-{
- struct inode *inode = container_of(head, struct inode, i_rcu);
- kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
-}
-
-static void ncp_destroy_inode(struct inode *inode)
-{
- call_rcu(&inode->i_rcu, ncp_i_callback);
-}
-
-static void init_once(void *foo)
-{
- struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
-
- mutex_init(&ei->open_mutex);
- inode_init_once(&ei->vfs_inode);
-}
-
-static int init_inodecache(void)
-{
- ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
- sizeof(struct ncp_inode_info),
- 0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD|SLAB_ACCOUNT),
- init_once);
- if (ncp_inode_cachep == NULL)
- return -ENOMEM;
- return 0;
-}
-
-static void destroy_inodecache(void)
-{
- /*
- * Make sure all delayed rcu free inodes are flushed before we
- * destroy cache.
- */
- rcu_barrier();
- kmem_cache_destroy(ncp_inode_cachep);
-}
-
-static int ncp_remount(struct super_block *sb, int *flags, char* data)
-{
- sync_filesystem(sb);
- *flags |= MS_NODIRATIME;
- return 0;
-}
-
-static const struct super_operations ncp_sops =
-{
- .alloc_inode = ncp_alloc_inode,
- .destroy_inode = ncp_destroy_inode,
- .drop_inode = generic_delete_inode,
- .evict_inode = ncp_evict_inode,
- .put_super = ncp_put_super,
- .statfs = ncp_statfs,
- .remount_fs = ncp_remount,
- .show_options = ncp_show_options,
-};
-
-/*
- * Fill in the ncpfs-specific information in the inode.
- */
-static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
-{
- NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
- NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
- NCP_FINFO(inode)->volNumber = nwinfo->volume;
-}
-
-void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
-{
- ncp_update_dirent(inode, nwinfo);
- NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
- NCP_FINFO(inode)->access = nwinfo->access;
- memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
- sizeof(nwinfo->file_handle));
- ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n",
- nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
- NCP_FINFO(inode)->dirEntNum);
-}
-
-static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
-{
- /* NFS namespace mode overrides others if it's set. */
- ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
- if (nwi->nfs.mode) {
- /* XXX Security? */
- inode->i_mode = nwi->nfs.mode;
- }
-
- inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
-
- inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
- inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
- inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
- inode->i_atime.tv_nsec = 0;
- inode->i_mtime.tv_nsec = 0;
- inode->i_ctime.tv_nsec = 0;
-}
-
-static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
-{
- struct nw_info_struct *nwi = &nwinfo->i;
- struct ncp_server *server = NCP_SERVER(inode);
-
- if (nwi->attributes & aDIR) {
- inode->i_mode = server->m.dir_mode;
- /* for directories dataStreamSize seems to be some
- Object ID ??? */
- i_size_write(inode, NCP_BLOCK_SIZE);
- } else {
- u32 size;
-
- inode->i_mode = server->m.file_mode;
- size = le32_to_cpu(nwi->dataStreamSize);
- i_size_write(inode, size);
-#ifdef CONFIG_NCPFS_EXTRAS
- if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
- && (nwi->attributes & aSHARED)) {
- switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
- case aHIDDEN:
- if (server->m.flags & NCP_MOUNT_SYMLINKS) {
- if (/* (size >= NCP_MIN_SYMLINK_SIZE)
- && */ (size <= NCP_MAX_SYMLINK_SIZE)) {
- inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
- NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
- break;
- }
- }
- /* FALLTHROUGH */
- case 0:
- if (server->m.flags & NCP_MOUNT_EXTRAS)
- inode->i_mode |= S_IRUGO;
- break;
- case aSYSTEM:
- if (server->m.flags & NCP_MOUNT_EXTRAS)
- inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
- break;
- /* case aSYSTEM|aHIDDEN: */
- default:
- /* reserved combination */
- break;
- }
- }
-#endif
- }
- if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
-}
-
-void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
-{
- NCP_FINFO(inode)->flags = 0;
- if (!atomic_read(&NCP_FINFO(inode)->opened)) {
- NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
- ncp_update_attrs(inode, nwinfo);
- }
-
- ncp_update_dates(inode, &nwinfo->i);
- ncp_update_dirent(inode, nwinfo);
-}
-
-/*
- * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
- */
-static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
-{
- struct ncp_server *server = NCP_SERVER(inode);
-
- NCP_FINFO(inode)->flags = 0;
-
- ncp_update_attrs(inode, nwinfo);
-
- ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode);
-
- set_nlink(inode, 1);
- inode->i_uid = server->m.uid;
- inode->i_gid = server->m.gid;
-
- ncp_update_dates(inode, &nwinfo->i);
- ncp_update_inode(inode, nwinfo);
-}
-
-#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
-static const struct inode_operations ncp_symlink_inode_operations = {
- .get_link = page_get_link,
- .setattr = ncp_notify_change,
-};
-#endif
-
-/*
- * Get a new inode.
- */
-struct inode *
-ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
-{
- struct inode *inode;
-
- if (info == NULL) {
- pr_err("%s: info is NULL\n", __func__);
- return NULL;
- }
-
- inode = new_inode(sb);
- if (inode) {
- atomic_set(&NCP_FINFO(inode)->opened, info->opened);
-
- inode->i_ino = info->ino;
- ncp_set_attr(inode, info);
- if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ncp_file_inode_operations;
- inode->i_fop = &ncp_file_operations;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &ncp_dir_inode_operations;
- inode->i_fop = &ncp_dir_operations;
-#ifdef CONFIG_NCPFS_NFS_NS
- } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
- init_special_inode(inode, inode->i_mode,
- new_decode_dev(info->i.nfs.rdev));
-#endif
-#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
- } else if (S_ISLNK(inode->i_mode)) {
- inode->i_op = &ncp_symlink_inode_operations;
- inode_nohighmem(inode);
- inode->i_data.a_ops = &ncp_symlink_aops;
-#endif
- } else {
- make_bad_inode(inode);
- }
- insert_inode_hash(inode);
- } else
- pr_err("%s: iget failed!\n", __func__);
- return inode;
-}
-
-static void
-ncp_evict_inode(struct inode *inode)
-{
- truncate_inode_pages_final(&inode->i_data);
- clear_inode(inode);
-
- if (S_ISDIR(inode->i_mode)) {
- ncp_dbg(2, "put directory %ld\n", inode->i_ino);
- }
-
- if (ncp_make_closed(inode) != 0) {
- /* We can't do anything but complain. */
- pr_err("%s: could not close\n", __func__);
- }
-}
-
-static void ncp_stop_tasks(struct ncp_server *server) {
- struct sock* sk = server->ncp_sock->sk;
-
- lock_sock(sk);
- sk->sk_error_report = server->error_report;
- sk->sk_data_ready = server->data_ready;
- sk->sk_write_space = server->write_space;
- release_sock(sk);
- del_timer_sync(&server->timeout_tm);
-
- flush_work(&server->rcv.tq);
- if (sk->sk_socket->type == SOCK_STREAM)
- flush_work(&server->tx.tq);
- else
- flush_work(&server->timeout_tq);
-}
-
-static int ncp_show_options(struct seq_file *seq, struct dentry *root)
-{
- struct ncp_server *server = NCP_SBP(root->d_sb);
- unsigned int tmp;
-
- if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
- seq_printf(seq, ",uid=%u",
- from_kuid_munged(&init_user_ns, server->m.uid));
- if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
- seq_printf(seq, ",gid=%u",
- from_kgid_munged(&init_user_ns, server->m.gid));
- if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
- seq_printf(seq, ",owner=%u",
- from_kuid_munged(&init_user_ns, server->m.mounted_uid));
- tmp = server->m.file_mode & S_IALLUGO;
- if (tmp != NCP_DEFAULT_FILE_MODE)
- seq_printf(seq, ",mode=0%o", tmp);
- tmp = server->m.dir_mode & S_IALLUGO;
- if (tmp != NCP_DEFAULT_DIR_MODE)
- seq_printf(seq, ",dirmode=0%o", tmp);
- if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
- tmp = server->m.time_out * 100 / HZ;
- seq_printf(seq, ",timeout=%u", tmp);
- }
- if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
- seq_printf(seq, ",retry=%u", server->m.retry_count);
- if (server->m.flags != 0)
- seq_printf(seq, ",flags=%lu", server->m.flags);
- if (server->m.wdog_pid != NULL)
- seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
-
- return 0;
-}
-
-static const struct ncp_option ncp_opts[] = {
- { "uid", OPT_INT, 'u' },
- { "gid", OPT_INT, 'g' },
- { "owner", OPT_INT, 'o' },
- { "mode", OPT_INT, 'm' },
- { "dirmode", OPT_INT, 'd' },
- { "timeout", OPT_INT, 't' },
- { "retry", OPT_INT, 'r' },
- { "flags", OPT_INT, 'f' },
- { "wdogpid", OPT_INT, 'w' },
- { "ncpfd", OPT_INT, 'n' },
- { "infofd", OPT_INT, 'i' }, /* v5 */
- { "version", OPT_INT, 'v' },
- { NULL, 0, 0 } };
-
-static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
- int optval;
- char *optarg;
- unsigned long optint;
- int version = 0;
- int ret;
-
- data->flags = 0;
- data->int_flags = 0;
- data->mounted_uid = GLOBAL_ROOT_UID;
- data->wdog_pid = NULL;
- data->ncp_fd = ~0;
- data->time_out = NCP_DEFAULT_TIME_OUT;
- data->retry_count = NCP_DEFAULT_RETRY_COUNT;
- data->uid = GLOBAL_ROOT_UID;
- data->gid = GLOBAL_ROOT_GID;
- data->file_mode = NCP_DEFAULT_FILE_MODE;
- data->dir_mode = NCP_DEFAULT_DIR_MODE;
- data->info_fd = -1;
- data->mounted_vol[0] = 0;
-
- while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
- ret = optval;
- if (ret < 0)
- goto err;
- switch (optval) {
- case 'u':
- data->uid = make_kuid(current_user_ns(), optint);
- if (!uid_valid(data->uid)) {
- ret = -EINVAL;
- goto err;
- }
- break;
- case 'g':
- data->gid = make_kgid(current_user_ns(), optint);
- if (!gid_valid(data->gid)) {
- ret = -EINVAL;
- goto err;
- }
- break;
- case 'o':
- data->mounted_uid = make_kuid(current_user_ns(), optint);
- if (!uid_valid(data->mounted_uid)) {
- ret = -EINVAL;
- goto err;
- }
- break;
- case 'm':
- data->file_mode = optint;
- break;
- case 'd':
- data->dir_mode = optint;
- break;
- case 't':
- data->time_out = optint;
- break;
- case 'r':
- data->retry_count = optint;
- break;
- case 'f':
- data->flags = optint;
- break;
- case 'w':
- data->wdog_pid = find_get_pid(optint);
- break;
- case 'n':
- data->ncp_fd = optint;
- break;
- case 'i':
- data->info_fd = optint;
- break;
- case 'v':
- ret = -ECHRNG;
- if (optint < NCP_MOUNT_VERSION_V4)
- goto err;
- if (optint > NCP_MOUNT_VERSION_V5)
- goto err;
- version = optint;
- break;
-
- }
- }
- return 0;
-err:
- put_pid(data->wdog_pid);
- data->wdog_pid = NULL;
- return ret;
-}
-
-static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
-{
- struct ncp_mount_data_kernel data;
- struct ncp_server *server;
- struct inode *root_inode;
- struct socket *sock;
- int error;
- int default_bufsize;
-#ifdef CONFIG_NCPFS_PACKET_SIGNING
- int options;
-#endif
- struct ncp_entry_info finfo;
-
- memset(&data, 0, sizeof(data));
- server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
- if (!server)
- return -ENOMEM;
- sb->s_fs_info = server;
-
- error = -EFAULT;
- if (raw_data == NULL)
- goto out;
- switch (*(int*)raw_data) {
- case NCP_MOUNT_VERSION:
- {
- struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
-
- data.flags = md->flags;
- data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
- data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
- data.wdog_pid = find_get_pid(md->wdog_pid);
- data.ncp_fd = md->ncp_fd;
- data.time_out = md->time_out;
- data.retry_count = md->retry_count;
- data.uid = make_kuid(current_user_ns(), md->uid);
- data.gid = make_kgid(current_user_ns(), md->gid);
- data.file_mode = md->file_mode;
- data.dir_mode = md->dir_mode;
- data.info_fd = -1;
- memcpy(data.mounted_vol, md->mounted_vol,
- NCP_VOLNAME_LEN+1);
- }
- break;
- case NCP_MOUNT_VERSION_V4:
- {
- struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
-
- data.flags = md->flags;
- data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
- data.wdog_pid = find_get_pid(md->wdog_pid);
- data.ncp_fd = md->ncp_fd;
- data.time_out = md->time_out;
- data.retry_count = md->retry_count;
- data.uid = make_kuid(current_user_ns(), md->uid);
- data.gid = make_kgid(current_user_ns(), md->gid);
- data.file_mode = md->file_mode;
- data.dir_mode = md->dir_mode;
- data.info_fd = -1;
- }
- break;
- default:
- error = -ECHRNG;
- if (memcmp(raw_data, "vers", 4) == 0) {
- error = ncp_parse_options(&data, raw_data);
- }
- if (error)
- goto out;
- break;
- }
- error = -EINVAL;
- if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
- !gid_valid(data.gid))
- goto out;
- sock = sockfd_lookup(data.ncp_fd, &error);
- if (!sock)
- goto out;
-
- if (sock->type == SOCK_STREAM)
- default_bufsize = 0xF000;
- else
- default_bufsize = 1024;
-
- sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
- sb->s_maxbytes = 0xFFFFFFFFU;
- sb->s_blocksize = 1024; /* Eh... Is this correct? */
- sb->s_blocksize_bits = 10;
- sb->s_magic = NCP_SUPER_MAGIC;
- sb->s_op = &ncp_sops;
- sb->s_d_op = &ncp_dentry_operations;
-
- server = NCP_SBP(sb);
- memset(server, 0, sizeof(*server));
-
- error = super_setup_bdi(sb);
- if (error)
- goto out_fput;
-
- server->ncp_sock = sock;
-
- if (data.info_fd != -1) {
- struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
- if (!info_sock)
- goto out_fput;
- server->info_sock = info_sock;
- error = -EBADFD;
- if (info_sock->type != SOCK_STREAM)
- goto out_fput2;
- }
-
-/* server->lock = 0; */
- mutex_init(&server->mutex);
- server->packet = NULL;
-/* server->buffer_size = 0; */
-/* server->conn_status = 0; */
-/* server->root_dentry = NULL; */
-/* server->root_setuped = 0; */
- mutex_init(&server->root_setup_lock);
-#ifdef CONFIG_NCPFS_PACKET_SIGNING
-/* server->sign_wanted = 0; */
-/* server->sign_active = 0; */
-#endif
- init_rwsem(&server->auth_rwsem);
- server->auth.auth_type = NCP_AUTH_NONE;
-/* server->auth.object_name_len = 0; */
-/* server->auth.object_name = NULL; */
-/* server->auth.object_type = 0; */
-/* server->priv.len = 0; */
-/* server->priv.data = NULL; */
-
- server->m = data;
- /* Although anything producing this is buggy, it happens
- now because of PATH_MAX changes.. */
- if (server->m.time_out < 1) {
- server->m.time_out = 10;
- pr_info("You need to recompile your ncpfs utils..\n");
- }
- server->m.time_out = server->m.time_out * HZ / 100;
- server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
- server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
-
-#ifdef CONFIG_NCPFS_NLS
- /* load the default NLS charsets */
- server->nls_vol = load_nls_default();
- server->nls_io = load_nls_default();
-#endif /* CONFIG_NCPFS_NLS */
-
- atomic_set(&server->dentry_ttl, 0); /* no caching */
-
- INIT_LIST_HEAD(&server->tx.requests);
- mutex_init(&server->rcv.creq_mutex);
- server->tx.creq = NULL;
- server->rcv.creq = NULL;
-
- timer_setup(&server->timeout_tm, ncpdgram_timeout_call, 0);
-#undef NCP_PACKET_SIZE
-#define NCP_PACKET_SIZE 131072
- error = -ENOMEM;
- server->packet_size = NCP_PACKET_SIZE;
- server->packet = vmalloc(NCP_PACKET_SIZE);
- if (server->packet == NULL)
- goto out_nls;
- server->txbuf = vmalloc(NCP_PACKET_SIZE);
- if (server->txbuf == NULL)
- goto out_packet;
- server->rxbuf = vmalloc(NCP_PACKET_SIZE);
- if (server->rxbuf == NULL)
- goto out_txbuf;
-
- lock_sock(sock->sk);
- server->data_ready = sock->sk->sk_data_ready;
- server->write_space = sock->sk->sk_write_space;
- server->error_report = sock->sk->sk_error_report;
- sock->sk->sk_user_data = server;
- sock->sk->sk_data_ready = ncp_tcp_data_ready;
- sock->sk->sk_error_report = ncp_tcp_error_report;
- if (sock->type == SOCK_STREAM) {
- server->rcv.ptr = (unsigned char*)&server->rcv.buf;
- server->rcv.len = 10;
- server->rcv.state = 0;
- INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
- INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
- sock->sk->sk_write_space = ncp_tcp_write_space;
- } else {
- INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
- INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
- }
- release_sock(sock->sk);
-
- ncp_lock_server(server);
- error = ncp_connect(server);
- ncp_unlock_server(server);
- if (error < 0)
- goto out_rxbuf;
- ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
-
- error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
-#ifdef CONFIG_NCPFS_PACKET_SIGNING
- if (ncp_negotiate_size_and_options(server, default_bufsize,
- NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
- {
- if (options != NCP_DEFAULT_OPTIONS)
- {
- if (ncp_negotiate_size_and_options(server,
- default_bufsize,
- options & 2,
- &(server->buffer_size), &options) != 0)
-
- {
- goto out_disconnect;
- }
- }
- ncp_lock_server(server);
- if (options & 2)
- server->sign_wanted = 1;
- ncp_unlock_server(server);
- }
- else
-#endif /* CONFIG_NCPFS_PACKET_SIGNING */
- if (ncp_negotiate_buffersize(server, default_bufsize,
- &(server->buffer_size)) != 0)
- goto out_disconnect;
- ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
-
- memset(&finfo, 0, sizeof(finfo));
- finfo.i.attributes = aDIR;
- finfo.i.dataStreamSize = 0; /* ignored */
- finfo.i.dirEntNum = 0;
- finfo.i.DosDirNum = 0;
-#ifdef CONFIG_NCPFS_SMALLDOS
- finfo.i.NSCreator = NW_NS_DOS;
-#endif
- finfo.volume = NCP_NUMBER_OF_VOLUMES;
- /* set dates of mountpoint to Jan 1, 1986; 00:00 */
- finfo.i.creationTime = finfo.i.modifyTime
- = cpu_to_le16(0x0000);
- finfo.i.creationDate = finfo.i.modifyDate
- = finfo.i.lastAccessDate
- = cpu_to_le16(0x0C21);
- finfo.i.nameLen = 0;
- finfo.i.entryName[0] = '\0';
-
- finfo.opened = 0;
- finfo.ino = 2; /* tradition */
-
- server->name_space[finfo.volume] = NW_NS_DOS;
-
- error = -ENOMEM;
- root_inode = ncp_iget(sb, &finfo);
- if (!root_inode)
- goto out_disconnect;
- ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
- sb->s_root = d_make_root(root_inode);
- if (!sb->s_root)
- goto out_disconnect;
- return 0;
-
-out_disconnect:
- ncp_lock_server(server);
- ncp_disconnect(server);
- ncp_unlock_server(server);
-out_rxbuf:
- ncp_stop_tasks(server);
- vfree(server->rxbuf);
-out_txbuf:
- vfree(server->txbuf);
-out_packet:
- vfree(server->packet);
-out_nls:
-#ifdef CONFIG_NCPFS_NLS
- unload_nls(server->nls_io);
- unload_nls(server->nls_vol);
-#endif
- mutex_destroy(&server->rcv.creq_mutex);
- mutex_destroy(&server->root_setup_lock);
- mutex_destroy(&server->mutex);
-out_fput2:
- if (server->info_sock)
- sockfd_put(server->info_sock);
-out_fput:
- sockfd_put(sock);
-out:
- put_pid(data.wdog_pid);
- sb->s_fs_info = NULL;
- kfree(server);
- return error;
-}
-
-static void delayed_free(struct rcu_head *p)
-{
- struct ncp_server *server = container_of(p, struct ncp_server, rcu);
-#ifdef CONFIG_NCPFS_NLS
- /* unload the NLS charsets */
- unload_nls(server->nls_vol);
- unload_nls(server->nls_io);
-#endif /* CONFIG_NCPFS_NLS */
- kfree(server);
-}
-
-static void ncp_put_super(struct super_block *sb)
-{
- struct ncp_server *server = NCP_SBP(sb);
-
- ncp_lock_server(server);
- ncp_disconnect(server);
- ncp_unlock_server(server);
-
- ncp_stop_tasks(server);
-
- mutex_destroy(&server->rcv.creq_mutex);
- mutex_destroy(&server->root_setup_lock);
- mutex_destroy(&server->mutex);
-
- if (server->info_sock)
- sockfd_put(server->info_sock);
- sockfd_put(server->ncp_sock);
- kill_pid(server->m.wdog_pid, SIGTERM, 1);
- put_pid(server->m.wdog_pid);
-
- kfree(server->priv.data);
- kfree(server->auth.object_name);
- vfree(server->rxbuf);
- vfree(server->txbuf);
- vfree(server->packet);
- call_rcu(&server->rcu, delayed_free);
-}
-
-static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
-{
- struct dentry* d;
- struct inode* i;
- struct ncp_inode_info* ni;
- struct ncp_server* s;
- struct ncp_volume_info vi;
- struct super_block *sb = dentry->d_sb;
- int err;
- __u8 dh;
-
- d = sb->s_root;
- if (!d) {
- goto dflt;
- }
- i = d_inode(d);
- if (!i) {
- goto dflt;
- }
- ni = NCP_FINFO(i);
- if (!ni) {
- goto dflt;
- }
- s = NCP_SBP(sb);
- if (!s) {
- goto dflt;
- }
- if (!s->m.mounted_vol[0]) {
- goto dflt;
- }
-
- err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
- if (err) {
- goto dflt;
- }
- err = ncp_get_directory_info(s, dh, &vi);
- ncp_dirhandle_free(s, dh);
- if (err) {
- goto dflt;
- }
- buf->f_type = NCP_SUPER_MAGIC;
- buf->f_bsize = vi.sectors_per_block * 512;
- buf->f_blocks = vi.total_blocks;
- buf->f_bfree = vi.free_blocks;
- buf->f_bavail = vi.free_blocks;
- buf->f_files = vi.total_dir_entries;
- buf->f_ffree = vi.available_dir_entries;
- buf->f_namelen = 12;
- return 0;
-
- /* We cannot say how much disk space is left on a mounted
- NetWare Server, because free space is distributed over
- volumes, and the current user might have disk quotas. So
- free space is not that simple to determine. Our decision
- here is to err conservatively. */
-
-dflt:;
- buf->f_type = NCP_SUPER_MAGIC;
- buf->f_bsize = NCP_BLOCK_SIZE;
- buf->f_blocks = 0;
- buf->f_bfree = 0;
- buf->f_bavail = 0;
- buf->f_namelen = 12;
- return 0;
-}
-
-int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
-{
- struct inode *inode = d_inode(dentry);
- int result = 0;
- __le32 info_mask;
- struct nw_modify_dos_info info;
- struct ncp_server *server;
-
- result = -EIO;
-
- server = NCP_SERVER(inode);
- if (!server) /* How this could happen? */
- goto out;
-
- result = -EPERM;
- if (IS_DEADDIR(d_inode(dentry)))
- goto out;
-
- /* ageing the dentry to force validation */
- ncp_age_dentry(server, dentry);
-
- result = setattr_prepare(dentry, attr);
- if (result < 0)
- goto out;
-
- result = -EPERM;
- if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
- goto out;
-
- if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
- goto out;
-
- if (((attr->ia_valid & ATTR_MODE) &&
- (attr->ia_mode &
- ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
- goto out;
-
- info_mask = 0;
- memset(&info, 0, sizeof(info));
-
-#if 1
- if ((attr->ia_valid & ATTR_MODE) != 0)
- {
- umode_t newmode = attr->ia_mode;
-
- info_mask |= DM_ATTRIBUTES;
-
- if (S_ISDIR(inode->i_mode)) {
- newmode &= server->m.dir_mode;
- } else {
-#ifdef CONFIG_NCPFS_EXTRAS
- if (server->m.flags & NCP_MOUNT_EXTRAS) {
- /* any non-default execute bit set */
- if (newmode & ~server->m.file_mode & S_IXUGO)
- info.attributes |= aSHARED | aSYSTEM;
- /* read for group/world and not in default file_mode */
- else if (newmode & ~server->m.file_mode & S_IRUGO)
- info.attributes |= aSHARED;
- } else
-#endif
- newmode &= server->m.file_mode;
- }
- if (newmode & S_IWUGO)
- info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
- else
- info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
-
-#ifdef CONFIG_NCPFS_NFS_NS
- if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
- result = ncp_modify_nfs_info(server,
- NCP_FINFO(inode)->volNumber,
- NCP_FINFO(inode)->dirEntNum,
- attr->ia_mode, 0);
- if (result != 0)
- goto out;
- info.attributes &= ~(aSHARED | aSYSTEM);
- {
- /* mark partial success */
- struct iattr tmpattr;
-
- tmpattr.ia_valid = ATTR_MODE;
- tmpattr.ia_mode = attr->ia_mode;
-
- setattr_copy(inode, &tmpattr);
- mark_inode_dirty(inode);
- }
- }
-#endif
- }
-#endif
-
- /* Do SIZE before attributes, otherwise mtime together with size does not work...
- */
- if ((attr->ia_valid & ATTR_SIZE) != 0) {
- int written;
-
- ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
-
- if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
- result = -EACCES;
- goto out;
- }
- ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
- attr->ia_size, 0, "", &written);
-
- /* According to ndir, the changes only take effect after
- closing the file */
- ncp_inode_close(inode);
- result = ncp_make_closed(inode);
- if (result)
- goto out;
-
- if (attr->ia_size != i_size_read(inode)) {
- truncate_setsize(inode, attr->ia_size);
- mark_inode_dirty(inode);
- }
- }
- if ((attr->ia_valid & ATTR_CTIME) != 0) {
- info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
- ncp_date_unix2dos(attr->ia_ctime.tv_sec,
- &info.creationTime, &info.creationDate);
- }
- if ((attr->ia_valid & ATTR_MTIME) != 0) {
- info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
- ncp_date_unix2dos(attr->ia_mtime.tv_sec,
- &info.modifyTime, &info.modifyDate);
- }
- if ((attr->ia_valid & ATTR_ATIME) != 0) {
- __le16 dummy;
- info_mask |= (DM_LAST_ACCESS_DATE);
- ncp_date_unix2dos(attr->ia_atime.tv_sec,
- &dummy, &info.lastAccessDate);
- }
- if (info_mask != 0) {
- result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
- inode, info_mask, &info);
- if (result != 0) {
- if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
- /* NetWare seems not to allow this. I
- do not know why. So, just tell the
- user everything went fine. This is
- a terrible hack, but I do not know
- how to do this correctly. */
- result = 0;
- } else
- goto out;
- }
-#ifdef CONFIG_NCPFS_STRONG
- if ((!result) && (info_mask & DM_ATTRIBUTES))
- NCP_FINFO(inode)->nwattr = info.attributes;
-#endif
- }
- if (result)
- goto out;
-
- setattr_copy(inode, attr);
- mark_inode_dirty(inode);
-
-out:
- if (result > 0)
- result = -EACCES;
- return result;
-}
-
-static struct dentry *ncp_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
-{
- return mount_nodev(fs_type, flags, data, ncp_fill_super);
-}
-
-static struct file_system_type ncp_fs_type = {
- .owner = THIS_MODULE,
- .name = "ncpfs",
- .mount = ncp_mount,
- .kill_sb = kill_anon_super,
- .fs_flags = FS_BINARY_MOUNTDATA,
-};
-MODULE_ALIAS_FS("ncpfs");
-
-static int __init init_ncp_fs(void)
-{
- int err;
- ncp_dbg(1, "called\n");
-
- err = init_inodecache();
- if (err)
- goto out1;
- err = register_filesystem(&ncp_fs_type);
- if (err)
- goto out;
- return 0;
-out:
- destroy_inodecache();
-out1:
- return err;
-}
-
-static void __exit exit_ncp_fs(void)
-{
- ncp_dbg(1, "called\n");
- unregister_filesystem(&ncp_fs_type);
- destroy_inodecache();
-}
-
-module_init(init_ncp_fs)
-module_exit(exit_ncp_fs)
-MODULE_LICENSE("GPL");
projects / linux-block.git / blobdiff