2005-04-17 06:20:36 +08:00
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/*
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* inode.c
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*
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* Copyright (C) 1995, 1996 by Volker Lendecke
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* Modified for big endian by J.F. Chadima and David S. Miller
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* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
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* Modified 1998 Wolfram Pienkoss for NLS
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* Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
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*
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*/
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#include <linux/module.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <asm/byteorder.h>
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#include <linux/time.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/stat.h>
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#include <linux/errno.h>
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#include <linux/file.h>
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#include <linux/fcntl.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <linux/smp_lock.h>
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#include <linux/vfs.h>
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2008-02-08 20:21:46 +08:00
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#include <linux/mount.h>
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#include <linux/seq_file.h>
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2005-04-17 06:20:36 +08:00
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#include <linux/ncp_fs.h>
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#include <net/sock.h>
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#include "ncplib_kernel.h"
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#include "getopt.h"
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2008-02-08 20:21:46 +08:00
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#define NCP_DEFAULT_FILE_MODE 0600
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#define NCP_DEFAULT_DIR_MODE 0700
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#define NCP_DEFAULT_TIME_OUT 10
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#define NCP_DEFAULT_RETRY_COUNT 20
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2005-04-17 06:20:36 +08:00
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static void ncp_delete_inode(struct inode *);
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static void ncp_put_super(struct super_block *);
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2006-06-23 17:02:58 +08:00
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static int ncp_statfs(struct dentry *, struct kstatfs *);
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2008-02-08 20:21:46 +08:00
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static int ncp_show_options(struct seq_file *, struct vfsmount *);
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2005-04-17 06:20:36 +08:00
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2006-12-07 12:33:20 +08:00
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static struct kmem_cache * ncp_inode_cachep;
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2005-04-17 06:20:36 +08:00
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static struct inode *ncp_alloc_inode(struct super_block *sb)
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{
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struct ncp_inode_info *ei;
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2006-12-07 12:33:17 +08:00
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ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
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2005-04-17 06:20:36 +08:00
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if (!ei)
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return NULL;
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return &ei->vfs_inode;
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}
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static void ncp_destroy_inode(struct inode *inode)
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{
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kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
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}
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2007-10-17 14:25:51 +08:00
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static void init_once(struct kmem_cache *cachep, void *foo)
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2005-04-17 06:20:36 +08:00
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{
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struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
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2007-05-17 13:10:57 +08:00
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mutex_init(&ei->open_mutex);
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inode_init_once(&ei->vfs_inode);
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2005-04-17 06:20:36 +08:00
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}
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2007-07-20 09:11:58 +08:00
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2005-04-17 06:20:36 +08:00
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static int init_inodecache(void)
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{
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ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
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sizeof(struct ncp_inode_info),
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2006-03-24 19:16:06 +08:00
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0, (SLAB_RECLAIM_ACCOUNT|
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SLAB_MEM_SPREAD),
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2007-07-20 09:11:58 +08:00
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init_once);
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2005-04-17 06:20:36 +08:00
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if (ncp_inode_cachep == NULL)
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return -ENOMEM;
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return 0;
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}
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static void destroy_inodecache(void)
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{
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2006-09-27 16:49:40 +08:00
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kmem_cache_destroy(ncp_inode_cachep);
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2005-04-17 06:20:36 +08:00
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}
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static int ncp_remount(struct super_block *sb, int *flags, char* data)
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{
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*flags |= MS_NODIRATIME;
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return 0;
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}
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2007-02-12 16:55:41 +08:00
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static const struct super_operations ncp_sops =
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2005-04-17 06:20:36 +08:00
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{
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.alloc_inode = ncp_alloc_inode,
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.destroy_inode = ncp_destroy_inode,
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.drop_inode = generic_delete_inode,
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.delete_inode = ncp_delete_inode,
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.put_super = ncp_put_super,
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.statfs = ncp_statfs,
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.remount_fs = ncp_remount,
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2008-02-08 20:21:46 +08:00
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.show_options = ncp_show_options,
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2005-04-17 06:20:36 +08:00
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};
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extern struct dentry_operations ncp_root_dentry_operations;
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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2006-06-28 19:26:44 +08:00
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extern const struct address_space_operations ncp_symlink_aops;
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2005-04-17 06:20:36 +08:00
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extern int ncp_symlink(struct inode*, struct dentry*, const char*);
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#endif
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/*
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* Fill in the ncpfs-specific information in the inode.
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*/
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static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
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NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
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NCP_FINFO(inode)->volNumber = nwinfo->volume;
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}
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void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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ncp_update_dirent(inode, nwinfo);
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NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
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NCP_FINFO(inode)->access = nwinfo->access;
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memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
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sizeof(nwinfo->file_handle));
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DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n",
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nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
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NCP_FINFO(inode)->dirEntNum);
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}
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static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
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{
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/* NFS namespace mode overrides others if it's set. */
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DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n",
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nwi->entryName, nwi->nfs.mode);
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if (nwi->nfs.mode) {
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/* XXX Security? */
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inode->i_mode = nwi->nfs.mode;
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}
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inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
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inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
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inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
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inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
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inode->i_atime.tv_nsec = 0;
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inode->i_mtime.tv_nsec = 0;
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inode->i_ctime.tv_nsec = 0;
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}
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static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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struct nw_info_struct *nwi = &nwinfo->i;
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struct ncp_server *server = NCP_SERVER(inode);
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if (nwi->attributes & aDIR) {
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inode->i_mode = server->m.dir_mode;
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/* for directories dataStreamSize seems to be some
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Object ID ??? */
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inode->i_size = NCP_BLOCK_SIZE;
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} else {
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inode->i_mode = server->m.file_mode;
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inode->i_size = le32_to_cpu(nwi->dataStreamSize);
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#ifdef CONFIG_NCPFS_EXTRAS
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if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
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&& (nwi->attributes & aSHARED)) {
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switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
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case aHIDDEN:
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if (server->m.flags & NCP_MOUNT_SYMLINKS) {
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if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE)
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&& */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) {
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inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
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NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
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break;
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}
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}
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/* FALLTHROUGH */
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case 0:
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if (server->m.flags & NCP_MOUNT_EXTRAS)
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inode->i_mode |= S_IRUGO;
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break;
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case aSYSTEM:
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if (server->m.flags & NCP_MOUNT_EXTRAS)
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inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
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break;
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/* case aSYSTEM|aHIDDEN: */
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default:
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/* reserved combination */
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break;
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}
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}
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#endif
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}
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if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
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}
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void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
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{
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NCP_FINFO(inode)->flags = 0;
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if (!atomic_read(&NCP_FINFO(inode)->opened)) {
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NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
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ncp_update_attrs(inode, nwinfo);
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}
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ncp_update_dates(inode, &nwinfo->i);
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ncp_update_dirent(inode, nwinfo);
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}
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/*
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* Fill in the inode based on the ncp_entry_info structure.
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*/
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static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
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{
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struct ncp_server *server = NCP_SERVER(inode);
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NCP_FINFO(inode)->flags = 0;
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ncp_update_attrs(inode, nwinfo);
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DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
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inode->i_nlink = 1;
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inode->i_uid = server->m.uid;
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inode->i_gid = server->m.gid;
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ncp_update_dates(inode, &nwinfo->i);
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ncp_update_inode(inode, nwinfo);
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}
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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2007-02-12 16:55:39 +08:00
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static const struct inode_operations ncp_symlink_inode_operations = {
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2005-04-17 06:20:36 +08:00
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.readlink = generic_readlink,
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.follow_link = page_follow_link_light,
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.put_link = page_put_link,
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.setattr = ncp_notify_change,
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};
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#endif
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/*
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* Get a new inode.
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*/
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struct inode *
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ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
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{
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struct inode *inode;
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if (info == NULL) {
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printk(KERN_ERR "ncp_iget: info is NULL\n");
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return NULL;
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}
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inode = new_inode(sb);
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if (inode) {
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atomic_set(&NCP_FINFO(inode)->opened, info->opened);
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inode->i_ino = info->ino;
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ncp_set_attr(inode, info);
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if (S_ISREG(inode->i_mode)) {
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inode->i_op = &ncp_file_inode_operations;
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inode->i_fop = &ncp_file_operations;
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} else if (S_ISDIR(inode->i_mode)) {
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inode->i_op = &ncp_dir_inode_operations;
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inode->i_fop = &ncp_dir_operations;
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#ifdef CONFIG_NCPFS_NFS_NS
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} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
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init_special_inode(inode, inode->i_mode,
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new_decode_dev(info->i.nfs.rdev));
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#endif
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#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
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} else if (S_ISLNK(inode->i_mode)) {
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inode->i_op = &ncp_symlink_inode_operations;
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inode->i_data.a_ops = &ncp_symlink_aops;
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#endif
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} else {
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make_bad_inode(inode);
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}
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insert_inode_hash(inode);
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} else
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printk(KERN_ERR "ncp_iget: iget failed!\n");
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return inode;
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}
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static void
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ncp_delete_inode(struct inode *inode)
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{
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2005-09-10 04:01:31 +08:00
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truncate_inode_pages(&inode->i_data, 0);
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2005-04-17 06:20:36 +08:00
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if (S_ISDIR(inode->i_mode)) {
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DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino);
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}
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if (ncp_make_closed(inode) != 0) {
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/* We can't do anything but complain. */
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printk(KERN_ERR "ncp_delete_inode: could not close\n");
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}
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clear_inode(inode);
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}
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static void ncp_stop_tasks(struct ncp_server *server) {
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struct sock* sk = server->ncp_sock->sk;
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sk->sk_error_report = server->error_report;
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sk->sk_data_ready = server->data_ready;
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sk->sk_write_space = server->write_space;
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del_timer_sync(&server->timeout_tm);
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flush_scheduled_work();
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}
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2008-02-08 20:21:46 +08:00
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static int ncp_show_options(struct seq_file *seq, struct vfsmount *mnt)
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{
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struct ncp_server *server = NCP_SBP(mnt->mnt_sb);
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unsigned int tmp;
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if (server->m.uid != 0)
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seq_printf(seq, ",uid=%u", server->m.uid);
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if (server->m.gid != 0)
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seq_printf(seq, ",gid=%u", server->m.gid);
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if (server->m.mounted_uid != 0)
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|
seq_printf(seq, ",owner=%u", 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;
|
|
|
|
}
|
|
|
|
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
2006-12-13 16:35:13 +08:00
|
|
|
int ret;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
data->flags = 0;
|
|
|
|
data->int_flags = 0;
|
|
|
|
data->mounted_uid = 0;
|
2006-12-13 16:35:11 +08:00
|
|
|
data->wdog_pid = NULL;
|
2005-04-17 06:20:36 +08:00
|
|
|
data->ncp_fd = ~0;
|
2008-02-08 20:21:46 +08:00
|
|
|
data->time_out = NCP_DEFAULT_TIME_OUT;
|
|
|
|
data->retry_count = NCP_DEFAULT_RETRY_COUNT;
|
2005-04-17 06:20:36 +08:00
|
|
|
data->uid = 0;
|
|
|
|
data->gid = 0;
|
2008-02-08 20:21:46 +08:00
|
|
|
data->file_mode = NCP_DEFAULT_FILE_MODE;
|
|
|
|
data->dir_mode = NCP_DEFAULT_DIR_MODE;
|
2005-04-17 06:20:36 +08:00
|
|
|
data->info_fd = -1;
|
|
|
|
data->mounted_vol[0] = 0;
|
|
|
|
|
|
|
|
while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
|
2006-12-13 16:35:13 +08:00
|
|
|
ret = optval;
|
|
|
|
if (ret < 0)
|
|
|
|
goto err;
|
2005-04-17 06:20:36 +08:00
|
|
|
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':
|
2006-12-13 16:35:11 +08:00
|
|
|
data->wdog_pid = find_get_pid(optint);
|
2005-04-17 06:20:36 +08:00
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
data->ncp_fd = optint;
|
|
|
|
break;
|
|
|
|
case 'i':
|
|
|
|
data->info_fd = optint;
|
|
|
|
break;
|
|
|
|
case 'v':
|
2006-12-13 16:35:13 +08:00
|
|
|
ret = -ECHRNG;
|
|
|
|
if (optint < NCP_MOUNT_VERSION_V4)
|
|
|
|
goto err;
|
|
|
|
if (optint > NCP_MOUNT_VERSION_V5)
|
|
|
|
goto err;
|
2005-04-17 06:20:36 +08:00
|
|
|
version = optint;
|
|
|
|
break;
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
2006-12-13 16:35:13 +08:00
|
|
|
err:
|
|
|
|
put_pid(data->wdog_pid);
|
|
|
|
data->wdog_pid = NULL;
|
|
|
|
return ret;
|
2005-04-17 06:20:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
2006-12-13 16:35:13 +08:00
|
|
|
data.wdog_pid = NULL;
|
2006-09-27 16:49:37 +08:00
|
|
|
server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
|
2005-04-17 06:20:36 +08:00
|
|
|
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 = md->mounted_uid;
|
2006-12-13 16:35:11 +08:00
|
|
|
data.wdog_pid = find_get_pid(md->wdog_pid);
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
2006-12-13 16:35:11 +08:00
|
|
|
data.wdog_pid = find_get_pid(md->wdog_pid);
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
2006-12-08 18:37:22 +08:00
|
|
|
sock_inode = ncp_filp->f_path.dentry->d_inode;
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
2006-12-08 18:37:22 +08:00
|
|
|
sock_inode = server->info_filp->f_path.dentry->d_inode;
|
2005-04-17 06:20:36 +08:00
|
|
|
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; */
|
2006-03-23 19:00:43 +08:00
|
|
|
mutex_init(&server->mutex);
|
2005-04-17 06:20:36 +08:00
|
|
|
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);
|
2006-03-23 19:00:43 +08:00
|
|
|
mutex_init(&server->rcv.creq_mutex);
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
2007-02-19 18:34:43 +08:00
|
|
|
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;
|
2005-04-17 06:20:36 +08:00
|
|
|
|
|
|
|
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;
|
2006-11-22 22:57:56 +08:00
|
|
|
INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
|
|
|
|
INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
|
2005-04-17 06:20:36 +08:00
|
|
|
sock->sk->sk_write_space = ncp_tcp_write_space;
|
|
|
|
} else {
|
2006-11-22 22:57:56 +08:00
|
|
|
INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
|
|
|
|
INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
|
2005-04-17 06:20:36 +08:00
|
|
|
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)
|
2007-02-19 18:34:43 +08:00
|
|
|
goto out_rxbuf;
|
2005-04-17 06:20:36 +08:00
|
|
|
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);
|
2007-02-19 18:34:43 +08:00
|
|
|
out_rxbuf:
|
2005-04-17 06:20:36 +08:00
|
|
|
ncp_stop_tasks(server);
|
2007-02-19 18:34:43 +08:00
|
|
|
vfree(server->rxbuf);
|
|
|
|
out_txbuf:
|
|
|
|
vfree(server->txbuf);
|
|
|
|
out_packet:
|
2005-04-17 06:20:36 +08:00
|
|
|
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:
|
2006-12-13 16:35:13 +08:00
|
|
|
put_pid(data.wdog_pid);
|
2005-04-17 06:20:36 +08:00
|
|
|
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);
|
2006-12-13 16:35:11 +08:00
|
|
|
kill_pid(server->m.wdog_pid, SIGTERM, 1);
|
|
|
|
put_pid(server->m.wdog_pid);
|
2005-04-17 06:20:36 +08:00
|
|
|
|
2006-01-15 05:21:12 +08:00
|
|
|
kfree(server->priv.data);
|
|
|
|
kfree(server->auth.object_name);
|
2007-02-19 18:34:43 +08:00
|
|
|
vfree(server->rxbuf);
|
|
|
|
vfree(server->txbuf);
|
2005-04-17 06:20:36 +08:00
|
|
|
vfree(server->packet);
|
|
|
|
sb->s_fs_info = NULL;
|
|
|
|
kfree(server);
|
|
|
|
}
|
|
|
|
|
2006-06-23 17:02:58 +08:00
|
|
|
static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
|
2005-04-17 06:20:36 +08:00
|
|
|
{
|
|
|
|
struct dentry* d;
|
|
|
|
struct inode* i;
|
|
|
|
struct ncp_inode_info* ni;
|
|
|
|
struct ncp_server* s;
|
|
|
|
struct ncp_volume_info vi;
|
2006-06-23 17:02:58 +08:00
|
|
|
struct super_block *sb = dentry->d_sb;
|
2005-04-17 06:20:36 +08:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
[PATCH] VFS: Permit filesystem to override root dentry on mount
Extend the get_sb() filesystem operation to take an extra argument that
permits the VFS to pass in the target vfsmount that defines the mountpoint.
The filesystem is then required to manually set the superblock and root dentry
pointers. For most filesystems, this should be done with simple_set_mnt()
which will set the superblock pointer and then set the root dentry to the
superblock's s_root (as per the old default behaviour).
The get_sb() op now returns an integer as there's now no need to return the
superblock pointer.
This patch permits a superblock to be implicitly shared amongst several mount
points, such as can be done with NFS to avoid potential inode aliasing. In
such a case, simple_set_mnt() would not be called, and instead the mnt_root
and mnt_sb would be set directly.
The patch also makes the following changes:
(*) the get_sb_*() convenience functions in the core kernel now take a vfsmount
pointer argument and return an integer, so most filesystems have to change
very little.
(*) If one of the convenience function is not used, then get_sb() should
normally call simple_set_mnt() to instantiate the vfsmount. This will
always return 0, and so can be tail-called from get_sb().
(*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the
dcache upon superblock destruction rather than shrink_dcache_anon().
This is required because the superblock may now have multiple trees that
aren't actually bound to s_root, but that still need to be cleaned up. The
currently called functions assume that the whole tree is rooted at s_root,
and that anonymous dentries are not the roots of trees which results in
dentries being left unculled.
However, with the way NFS superblock sharing are currently set to be
implemented, these assumptions are violated: the root of the filesystem is
simply a dummy dentry and inode (the real inode for '/' may well be
inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries
with child trees.
[*] Anonymous until discovered from another tree.
(*) The documentation has been adjusted, including the additional bit of
changing ext2_* into foo_* in the documentation.
[akpm@osdl.org: convert ipath_fs, do other stuff]
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 17:02:57 +08:00
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static int ncp_get_sb(struct file_system_type *fs_type,
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int flags, const char *dev_name, void *data, struct vfsmount *mnt)
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2005-04-17 06:20:36 +08:00
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{
|
[PATCH] VFS: Permit filesystem to override root dentry on mount
Extend the get_sb() filesystem operation to take an extra argument that
permits the VFS to pass in the target vfsmount that defines the mountpoint.
The filesystem is then required to manually set the superblock and root dentry
pointers. For most filesystems, this should be done with simple_set_mnt()
which will set the superblock pointer and then set the root dentry to the
superblock's s_root (as per the old default behaviour).
The get_sb() op now returns an integer as there's now no need to return the
superblock pointer.
This patch permits a superblock to be implicitly shared amongst several mount
points, such as can be done with NFS to avoid potential inode aliasing. In
such a case, simple_set_mnt() would not be called, and instead the mnt_root
and mnt_sb would be set directly.
The patch also makes the following changes:
(*) the get_sb_*() convenience functions in the core kernel now take a vfsmount
pointer argument and return an integer, so most filesystems have to change
very little.
(*) If one of the convenience function is not used, then get_sb() should
normally call simple_set_mnt() to instantiate the vfsmount. This will
always return 0, and so can be tail-called from get_sb().
(*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the
dcache upon superblock destruction rather than shrink_dcache_anon().
This is required because the superblock may now have multiple trees that
aren't actually bound to s_root, but that still need to be cleaned up. The
currently called functions assume that the whole tree is rooted at s_root,
and that anonymous dentries are not the roots of trees which results in
dentries being left unculled.
However, with the way NFS superblock sharing are currently set to be
implemented, these assumptions are violated: the root of the filesystem is
simply a dummy dentry and inode (the real inode for '/' may well be
inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries
with child trees.
[*] Anonymous until discovered from another tree.
(*) The documentation has been adjusted, including the additional bit of
changing ext2_* into foo_* in the documentation.
[akpm@osdl.org: convert ipath_fs, do other stuff]
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nathan Scott <nathans@sgi.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 17:02:57 +08:00
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return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt);
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2005-04-17 06:20:36 +08:00
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}
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static struct file_system_type ncp_fs_type = {
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.owner = THIS_MODULE,
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.name = "ncpfs",
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.get_sb = ncp_get_sb,
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.kill_sb = kill_anon_super,
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2008-02-08 20:21:46 +08:00
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.fs_flags = FS_BINARY_MOUNTDATA,
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2005-04-17 06:20:36 +08:00
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};
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static int __init init_ncp_fs(void)
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{
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int err;
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2008-02-06 17:37:09 +08:00
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DPRINTK("ncpfs: init_ncp_fs called\n");
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2005-04-17 06:20:36 +08:00
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err = init_inodecache();
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if (err)
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goto out1;
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err = register_filesystem(&ncp_fs_type);
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if (err)
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goto out;
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return 0;
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out:
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destroy_inodecache();
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out1:
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return err;
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}
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static void __exit exit_ncp_fs(void)
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{
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2008-02-06 17:37:09 +08:00
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DPRINTK("ncpfs: exit_ncp_fs called\n");
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2005-04-17 06:20:36 +08:00
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unregister_filesystem(&ncp_fs_type);
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destroy_inodecache();
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}
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module_init(init_ncp_fs)
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module_exit(exit_ncp_fs)
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MODULE_LICENSE("GPL");
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