diff options
Diffstat (limited to 'fs/ncpfs/inode.c')
| -rw-r--r-- | fs/ncpfs/inode.c | 1012 |
1 files changed, 1012 insertions, 0 deletions
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c new file mode 100644 index 00000000000..44795d2f4b3 --- /dev/null +++ b/fs/ncpfs/inode.c @@ -0,0 +1,1012 @@ +/* + * 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 + * + */ + +#include <linux/config.h> +#include <linux/module.h> + +#include <asm/system.h> +#include <asm/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/smp_lock.h> +#include <linux/vfs.h> + +#include <linux/ncp_fs.h> + +#include <net/sock.h> + +#include "ncplib_kernel.h" +#include "getopt.h" + +static void ncp_delete_inode(struct inode *); +static void ncp_put_super(struct super_block *); +static int ncp_statfs(struct super_block *, struct kstatfs *); + +static kmem_cache_t * 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, SLAB_KERNEL); + if (!ei) + return NULL; + return &ei->vfs_inode; +} + +static void ncp_destroy_inode(struct inode *inode) +{ + kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode)); +} + +static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) +{ + struct ncp_inode_info *ei = (struct ncp_inode_info *) foo; + + if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == + SLAB_CTOR_CONSTRUCTOR) { + init_MUTEX(&ei->open_sem); + 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, + init_once, NULL); + if (ncp_inode_cachep == NULL) + return -ENOMEM; + return 0; +} + +static void destroy_inodecache(void) +{ + if (kmem_cache_destroy(ncp_inode_cachep)) + printk(KERN_INFO "ncp_inode_cache: not all structures were freed\n"); +} + +static int ncp_remount(struct super_block *sb, int *flags, char* data) +{ + *flags |= MS_NODIRATIME; + return 0; +} + +static struct super_operations ncp_sops = +{ + .alloc_inode = ncp_alloc_inode, + .destroy_inode = ncp_destroy_inode, + .drop_inode = generic_delete_inode, + .delete_inode = ncp_delete_inode, + .put_super = ncp_put_super, + .statfs = ncp_statfs, + .remount_fs = ncp_remount, +}; + +extern struct dentry_operations ncp_root_dentry_operations; +#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) +extern struct address_space_operations ncp_symlink_aops; +extern int ncp_symlink(struct inode*, struct dentry*, const char*); +#endif + +/* + * 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)); + DPRINTK("ncp_update_inode: 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. */ + DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%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 = (inode->i_size + 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 ??? */ + inode->i_size = NCP_BLOCK_SIZE; + } else { + inode->i_mode = server->m.file_mode; + inode->i_size = le32_to_cpu(nwi->dataStreamSize); +#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 (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE) + && */ (inode->i_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. + */ +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); + + DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode); + + inode->i_nlink = 1; + inode->i_uid = server->m.uid; + inode->i_gid = server->m.gid; + inode->i_blksize = NCP_BLOCK_SIZE; + + ncp_update_dates(inode, &nwinfo->i); + ncp_update_inode(inode, nwinfo); +} + +#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) +static struct inode_operations ncp_symlink_inode_operations = { + .readlink = generic_readlink, + .follow_link = page_follow_link_light, + .put_link = page_put_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) { + printk(KERN_ERR "ncp_iget: info is NULL\n"); + 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->i_data.a_ops = &ncp_symlink_aops; +#endif + } else { + make_bad_inode(inode); + } + insert_inode_hash(inode); + } else + printk(KERN_ERR "ncp_iget: iget failed!\n"); + return inode; +} + +static void +ncp_delete_inode(struct inode *inode) +{ + if (S_ISDIR(inode->i_mode)) { + DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino); + } + + if (ncp_make_closed(inode) != 0) { + /* We can't do anything but complain. */ + printk(KERN_ERR "ncp_delete_inode: could not close\n"); + } + clear_inode(inode); +} + +static void ncp_stop_tasks(struct ncp_server *server) { + struct sock* sk = server->ncp_sock->sk; + + sk->sk_error_report = server->error_report; + sk->sk_data_ready = server->data_ready; + sk->sk_write_space = server->write_space; + del_timer_sync(&server->timeout_tm); + flush_scheduled_work(); +} + +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; + + data->flags = 0; + data->int_flags = 0; + data->mounted_uid = 0; + data->wdog_pid = -1; + data->ncp_fd = ~0; + data->time_out = 10; + data->retry_count = 20; + data->uid = 0; + data->gid = 0; + data->file_mode = 0600; + data->dir_mode = 0700; + data->info_fd = -1; + data->mounted_vol[0] = 0; + + while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) { + if (optval < 0) + return optval; + switch (optval) { + case 'u': + data->uid = optint; + break; + case 'g': + data->gid = optint; + break; + case 'o': + data->mounted_uid = optint; + 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 = optint; + break; + case 'n': + data->ncp_fd = optint; + break; + case 'i': + data->info_fd = optint; + break; + case 'v': + if (optint < NCP_MOUNT_VERSION_V4) { + return -ECHRNG; + } + if (optint > NCP_MOUNT_VERSION_V5) { + return -ECHRNG; + } + version = optint; + break; + + } + } + return 0; +} + +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 file *ncp_filp; + struct inode *root_inode; + struct inode *sock_inode; + struct socket *sock; + int error; + int default_bufsize; +#ifdef CONFIG_NCPFS_PACKET_SIGNING + int options; +#endif + struct ncp_entry_info finfo; + + server = kmalloc(sizeof(struct ncp_server), GFP_KERNEL); + if (!server) + return -ENOMEM; + sb->s_fs_info = server; + memset(server, 0, sizeof(struct ncp_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 = md->mounted_uid; + data.wdog_pid = md->wdog_pid; + data.ncp_fd = md->ncp_fd; + data.time_out = md->time_out; + data.retry_count = md->retry_count; + data.uid = md->uid; + data.gid = 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.int_flags = 0; + data.mounted_uid = md->mounted_uid; + data.wdog_pid = md->wdog_pid; + data.ncp_fd = md->ncp_fd; + data.time_out = md->time_out; + data.retry_count = md->retry_count; + data.uid = md->uid; + data.gid = md->gid; + data.file_mode = md->file_mode; + data.dir_mode = md->dir_mode; + data.info_fd = -1; + data.mounted_vol[0] = 0; + } + break; + default: + error = -ECHRNG; + if (memcmp(raw_data, "vers", 4) == 0) { + error = ncp_parse_options(&data, raw_data); + } + if (error) + goto out; + break; + } + error = -EBADF; + ncp_filp = fget(data.ncp_fd); + if (!ncp_filp) + goto out; + error = -ENOTSOCK; + sock_inode = ncp_filp->f_dentry->d_inode; + if (!S_ISSOCK(sock_inode->i_mode)) + goto out_fput; + sock = SOCKET_I(sock_inode); + if (!sock) + goto out_fput; + + 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; + + server = NCP_SBP(sb); + memset(server, 0, sizeof(*server)); + + server->ncp_filp = ncp_filp; + server->ncp_sock = sock; + + if (data.info_fd != -1) { + struct socket *info_sock; + + error = -EBADF; + server->info_filp = fget(data.info_fd); + if (!server->info_filp) + goto out_fput; + error = -ENOTSOCK; + sock_inode = server->info_filp->f_dentry->d_inode; + if (!S_ISSOCK(sock_inode->i_mode)) + goto out_fput2; + info_sock = SOCKET_I(sock_inode); + if (!info_sock) + goto out_fput2; + error = -EBADFD; + if (info_sock->type != SOCK_STREAM) + goto out_fput2; + server->info_sock = info_sock; + } + +/* server->lock = 0; */ + init_MUTEX(&server->sem); + server->packet = NULL; +/* server->buffer_size = 0; */ +/* server->conn_status = 0; */ +/* server->root_dentry = NULL; */ +/* server->root_setuped = 0; */ +#ifdef CONFIG_NCPFS_PACKET_SIGNING +/* server->sign_wanted = 0; */ +/* server->sign_active = 0; */ +#endif + 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; + /* Althought anything producing this is buggy, it happens + now because of PATH_MAX changes.. */ + if (server->m.time_out < 1) { + server->m.time_out = 10; + printk(KERN_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 */ + + server->dentry_ttl = 0; /* no caching */ + + INIT_LIST_HEAD(&server->tx.requests); + init_MUTEX(&server->rcv.creq_sem); + server->tx.creq = NULL; + server->rcv.creq = NULL; + 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; + + init_timer(&server->timeout_tm); +#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; + + 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, server); + INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc, server); + sock->sk->sk_write_space = ncp_tcp_write_space; + } else { + INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc, server); + INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc, server); + server->timeout_tm.data = (unsigned long)server; + server->timeout_tm.function = ncpdgram_timeout_call; + } + + ncp_lock_server(server); + error = ncp_connect(server); + ncp_unlock_server(server); + if (error < 0) + goto out_packet; + DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) 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; + } + } + if (options & 2) + server->sign_wanted = 1; + } + else +#endif /* CONFIG_NCPFS_PACKET_SIGNING */ + if (ncp_negotiate_buffersize(server, default_bufsize, + &(server->buffer_size)) != 0) + goto out_disconnect; + DPRINTK("ncpfs: 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; + DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber); + sb->s_root = d_alloc_root(root_inode); + if (!sb->s_root) + goto out_no_root; + sb->s_root->d_op = &ncp_root_dentry_operations; + return 0; + +out_no_root: + iput(root_inode); +out_disconnect: + ncp_lock_server(server); + ncp_disconnect(server); + ncp_unlock_server(server); +out_packet: + ncp_stop_tasks(server); + vfree(server->packet); +out_nls: +#ifdef CONFIG_NCPFS_NLS + unload_nls(server->nls_io); + unload_nls(server->nls_vol); +#endif +out_fput2: + if (server->info_filp) + fput(server->info_filp); +out_fput: + /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>: + * + * The previously used put_filp(ncp_filp); was bogous, since + * it doesn't proper unlocking. + */ + fput(ncp_filp); +out: + sb->s_fs_info = NULL; + kfree(server); + return error; +} + +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); + +#ifdef CONFIG_NCPFS_NLS + /* unload the NLS charsets */ + if (server->nls_vol) + { + unload_nls(server->nls_vol); + server->nls_vol = NULL; + } + if (server->nls_io) + { + unload_nls(server->nls_io); + server->nls_io = NULL; + } +#endif /* CONFIG_NCPFS_NLS */ + + if (server->info_filp) + fput(server->info_filp); + fput(server->ncp_filp); + kill_proc(server->m.wdog_pid, SIGTERM, 1); + + if (server->priv.data) + ncp_kfree_s(server->priv.data, server->priv.len); + if (server->auth.object_name) + ncp_kfree_s(server->auth.object_name, server->auth.object_name_len); + vfree(server->packet); + sb->s_fs_info = NULL; + kfree(server); +} + +static int ncp_statfs(struct super_block *sb, struct kstatfs *buf) +{ + struct dentry* d; + struct inode* i; + struct ncp_inode_info* ni; + struct ncp_server* s; + struct ncp_volume_info vi; + int err; + __u8 dh; + + d = sb->s_root; + if (!d) { + goto dflt; + } + i = d->d_inode; + 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 = dentry->d_inode; + int result = 0; + __le32 info_mask; + struct nw_modify_dos_info info; + struct ncp_server *server; + + result = -EIO; + + lock_kernel(); + + server = NCP_SERVER(inode); + if ((!server) || !ncp_conn_valid(server)) + goto out; + + /* ageing the dentry to force validation */ + ncp_age_dentry(server, dentry); + + result = inode_change_ok(inode, attr); + if (result < 0) + goto out; + + result = -EPERM; + if (((attr->ia_valid & ATTR_UID) && + (attr->ia_uid != server->m.uid))) + goto out; + + if (((attr->ia_valid & ATTR_GID) && + (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; + + result = inode_setattr(inode, &tmpattr); + if (result) + goto out; + } + } +#endif + } +#endif + + /* Do SIZE before attributes, otherwise mtime together with size does not work... + */ + if ((attr->ia_valid & ATTR_SIZE) != 0) { + int written; + + DPRINTK("ncpfs: trying to change size to %ld\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; + { + struct iattr tmpattr; + + tmpattr.ia_valid = ATTR_SIZE; + tmpattr.ia_size = attr->ia_size; + + result = inode_setattr(inode, &tmpattr); + if (result) + goto out; + } + } + 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) { + result = -EACCES; + + 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) + result = inode_setattr(inode, attr); +out: + unlock_kernel(); + return result; +} + +#ifdef DEBUG_NCP_MALLOC +int ncp_malloced; +int ncp_current_malloced; +#endif + +static struct super_block *ncp_get_sb(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) +{ + return get_sb_nodev(fs_type, flags, data, ncp_fill_super); +} + +static struct file_system_type ncp_fs_type = { + .owner = THIS_MODULE, + .name = "ncpfs", + .get_sb = ncp_get_sb, + .kill_sb = kill_anon_super, +}; + +static int __init init_ncp_fs(void) +{ + int err; + DPRINTK("ncpfs: init_module called\n"); + +#ifdef DEBUG_NCP_MALLOC + ncp_malloced = 0; + ncp_current_malloced = 0; +#endif + 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) +{ + DPRINTK("ncpfs: cleanup_module called\n"); + unregister_filesystem(&ncp_fs_type); + destroy_inodecache(); +#ifdef DEBUG_NCP_MALLOC + PRINTK("ncp_malloced: %d\n", ncp_malloced); + PRINTK("ncp_current_malloced: %d\n", ncp_current_malloced); +#endif +} + +module_init(init_ncp_fs) +module_exit(exit_ncp_fs) +MODULE_LICENSE("GPL"); |