/* * ncplib_kernel.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 1999 Wolfram Pienkoss for NLS * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info * */ #include <linux/config.h> #include "ncplib_kernel.h" static inline void assert_server_locked(struct ncp_server *server) { if (server->lock == 0) { DPRINTK("ncpfs: server not locked!\n"); } } static void ncp_add_byte(struct ncp_server *server, __u8 x) { assert_server_locked(server); *(__u8 *) (&(server->packet[server->current_size])) = x; server->current_size += 1; return; } static void ncp_add_word(struct ncp_server *server, __le16 x) { assert_server_locked(server); put_unaligned(x, (__le16 *) (&(server->packet[server->current_size]))); server->current_size += 2; return; } static void ncp_add_be16(struct ncp_server *server, __u16 x) { assert_server_locked(server); put_unaligned(cpu_to_be16(x), (__be16 *) (&(server->packet[server->current_size]))); server->current_size += 2; } static void ncp_add_dword(struct ncp_server *server, __le32 x) { assert_server_locked(server); put_unaligned(x, (__le32 *) (&(server->packet[server->current_size]))); server->current_size += 4; return; } static void ncp_add_be32(struct ncp_server *server, __u32 x) { assert_server_locked(server); put_unaligned(cpu_to_be32(x), (__be32 *)(&(server->packet[server->current_size]))); server->current_size += 4; } static inline void ncp_add_dword_lh(struct ncp_server *server, __u32 x) { ncp_add_dword(server, cpu_to_le32(x)); } static void ncp_add_mem(struct ncp_server *server, const void *source, int size) { assert_server_locked(server); memcpy(&(server->packet[server->current_size]), source, size); server->current_size += size; return; } static void ncp_add_pstring(struct ncp_server *server, const char *s) { int len = strlen(s); assert_server_locked(server); if (len > 255) { DPRINTK("ncpfs: string too long: %s\n", s); len = 255; } ncp_add_byte(server, len); ncp_add_mem(server, s, len); return; } static inline void ncp_init_request(struct ncp_server *server) { ncp_lock_server(server); server->current_size = sizeof(struct ncp_request_header); server->has_subfunction = 0; } static inline void ncp_init_request_s(struct ncp_server *server, int subfunction) { ncp_lock_server(server); server->current_size = sizeof(struct ncp_request_header) + 2; ncp_add_byte(server, subfunction); server->has_subfunction = 1; } static inline char * ncp_reply_data(struct ncp_server *server, int offset) { return &(server->packet[sizeof(struct ncp_reply_header) + offset]); } static inline __u8 BVAL(void* data) { return get_unaligned((__u8*)data); } static __u8 ncp_reply_byte(struct ncp_server *server, int offset) { return get_unaligned((__u8 *) ncp_reply_data(server, offset)); } static inline __u16 WVAL_LH(void* data) { return le16_to_cpu(get_unaligned((__le16*)data)); } static __u16 ncp_reply_le16(struct ncp_server *server, int offset) { return le16_to_cpu(get_unaligned((__le16 *) ncp_reply_data(server, offset))); } static __u16 ncp_reply_be16(struct ncp_server *server, int offset) { return be16_to_cpu(get_unaligned((__be16 *) ncp_reply_data(server, offset))); } static inline __u32 DVAL_LH(void* data) { return le32_to_cpu(get_unaligned((__le32*)data)); } static __le32 ncp_reply_dword(struct ncp_server *server, int offset) { return get_unaligned((__le32 *) ncp_reply_data(server, offset)); } static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { return le32_to_cpu(ncp_reply_dword(server, offset)); } int ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) { int result; ncp_init_request(server); ncp_add_be16(server, size); if ((result = ncp_request(server, 33)) != 0) { ncp_unlock_server(server); return result; } *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); ncp_unlock_server(server); return 0; } /* options: * bit 0 ipx checksum * bit 1 packet signing */ int ncp_negotiate_size_and_options(struct ncp_server *server, int size, int options, int *ret_size, int *ret_options) { int result; /* there is minimum */ if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; ncp_init_request(server); ncp_add_be16(server, size); ncp_add_byte(server, options); if ((result = ncp_request(server, 0x61)) != 0) { ncp_unlock_server(server); return result; } /* NCP over UDP returns 0 (!!!) */ result = ncp_reply_be16(server, 0); if (result >= NCP_BLOCK_SIZE) size = min(result, size); *ret_size = size; *ret_options = ncp_reply_byte(server, 4); ncp_unlock_server(server); return 0; } int ncp_get_volume_info_with_number(struct ncp_server* server, int n, struct ncp_volume_info* target) { int result; int len; ncp_init_request_s(server, 44); ncp_add_byte(server, n); if ((result = ncp_request(server, 22)) != 0) { goto out; } target->total_blocks = ncp_reply_dword_lh(server, 0); target->free_blocks = ncp_reply_dword_lh(server, 4); target->purgeable_blocks = ncp_reply_dword_lh(server, 8); target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); target->total_dir_entries = ncp_reply_dword_lh(server, 16); target->available_dir_entries = ncp_reply_dword_lh(server, 20); target->sectors_per_block = ncp_reply_byte(server, 28); memset(&(target->volume_name), 0, sizeof(target->volume_name)); result = -EIO; len = ncp_reply_byte(server, 29); if (len > NCP_VOLNAME_LEN) { DPRINTK("ncpfs: volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); result = 0; out: ncp_unlock_server(server); return result; } int ncp_get_directory_info(struct ncp_server* server, __u8 n, struct ncp_volume_info* target) { int result; int len; ncp_init_request_s(server, 45); ncp_add_byte(server, n); if ((result = ncp_request(server, 22)) != 0) { goto out; } target->total_blocks = ncp_reply_dword_lh(server, 0); target->free_blocks = ncp_reply_dword_lh(server, 4); target->purgeable_blocks = 0; target->not_yet_purgeable_blocks = 0; target->total_dir_entries = ncp_reply_dword_lh(server, 8); target->available_dir_entries = ncp_reply_dword_lh(server, 12); target->sectors_per_block = ncp_reply_byte(server, 20); memset(&(target->volume_name), 0, sizeof(target->volume_name)); result = -EIO; len = ncp_reply_byte(server, 21); if (len > NCP_VOLNAME_LEN) { DPRINTK("ncpfs: volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); result = 0; out: ncp_unlock_server(server); return result; } int ncp_close_file(struct ncp_server *server, const char *file_id) { int result; ncp_init_request(server); ncp_add_byte(server, 0); ncp_add_mem(server, file_id, 6); result = ncp_request(server, 66); ncp_unlock_server(server); return result; } int ncp_make_closed(struct inode *inode) { int err; err = 0; down(&NCP_FINFO(inode)->open_sem); if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { atomic_set(&NCP_FINFO(inode)->opened, 0); err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); if (!err) PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", NCP_FINFO(inode)->volNumber, NCP_FINFO(inode)->dirEntNum, err); } up(&NCP_FINFO(inode)->open_sem); return err; } static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, __le32 dir_base, int have_dir_base, const char *path) { ncp_add_byte(server, vol_num); ncp_add_dword(server, dir_base); if (have_dir_base != 0) { ncp_add_byte(server, 1); /* dir_base */ } else { ncp_add_byte(server, 0xff); /* no handle */ } if (path != NULL) { ncp_add_byte(server, 1); /* 1 component */ ncp_add_pstring(server, path); } else { ncp_add_byte(server, 0); } } int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, __u8* dirhandle) { int result; ncp_init_request(server); ncp_add_byte(server, 12); /* subfunction */ ncp_add_byte(server, NW_NS_DOS); ncp_add_byte(server, 0); ncp_add_word(server, 0); ncp_add_handle_path(server, volnum, dirent, 1, NULL); if ((result = ncp_request(server, 87)) == 0) { *dirhandle = ncp_reply_byte(server, 0); } ncp_unlock_server(server); return result; } int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { int result; ncp_init_request_s(server, 20); ncp_add_byte(server, dirhandle); result = ncp_request(server, 22); ncp_unlock_server(server); return result; } void ncp_extract_file_info(void *structure, struct nw_info_struct *target) { __u8 *name_len; const int info_struct_size = offsetof(struct nw_info_struct, nameLen); memcpy(target, structure, info_struct_size); name_len = structure + info_struct_size; target->nameLen = *name_len; memcpy(target->entryName, name_len + 1, *name_len); target->entryName[*name_len] = '\0'; target->volNumber = le32_to_cpu(target->volNumber); return; } #ifdef CONFIG_NCPFS_NFS_NS static inline void ncp_extract_nfs_info(unsigned char *structure, struct nw_nfs_info *target) { target->mode = DVAL_LH(structure); target->rdev = DVAL_LH(structure + 8); } #endif int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target) { int result = 0; #ifdef CONFIG_NCPFS_NFS_NS __u32 volnum = target->volNumber; if (ncp_is_nfs_extras(server, volnum)) { ncp_init_request(server); ncp_add_byte(server, 19); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, NW_NS_NFS); ncp_add_byte(server, 0); ncp_add_byte(server, volnum); ncp_add_dword(server, target->dirEntNum); /* We must retrieve both nlinks and rdev, otherwise some server versions report zeroes instead of valid data */ ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); if ((result = ncp_request(server, 87)) == 0) { ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); DPRINTK(KERN_DEBUG "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", target->entryName, target->nfs.mode, target->nfs.rdev); } else { target->nfs.mode = 0; target->nfs.rdev = 0; } ncp_unlock_server(server); } else #endif { target->nfs.mode = 0; target->nfs.rdev = 0; } return result; } /* * Returns information for a (one-component) name relative to * the specified directory. */ int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, struct nw_info_struct *target) { __u8 volnum = NCP_FINFO(dir)->volNumber; __le32 dirent = NCP_FINFO(dir)->dirEntNum; int result; if (target == NULL) { printk(KERN_ERR "ncp_obtain_info: invalid call\n"); return -EINVAL; } ncp_init_request(server); ncp_add_byte(server, 6); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */ ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ ncp_add_dword(server, RIM_ALL); ncp_add_handle_path(server, volnum, dirent, 1, path); if ((result = ncp_request(server, 87)) != 0) goto out; ncp_extract_file_info(ncp_reply_data(server, 0), target); ncp_unlock_server(server); result = ncp_obtain_nfs_info(server, target); return result; out: ncp_unlock_server(server); return result; } #ifdef CONFIG_NCPFS_NFS_NS static int ncp_obtain_DOS_dir_base(struct ncp_server *server, __u8 volnum, __le32 dirent, char *path, /* At most 1 component */ __le32 *DOS_dir_base) { int result; ncp_init_request(server); ncp_add_byte(server, 6); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, server->name_space[volnum]); ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ ncp_add_dword(server, RIM_DIRECTORY); ncp_add_handle_path(server, volnum, dirent, 1, path); if ((result = ncp_request(server, 87)) == 0) { if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34); } ncp_unlock_server(server); return result; } #endif /* CONFIG_NCPFS_NFS_NS */ static inline int ncp_get_known_namespace(struct ncp_server *server, __u8 volume) { #if defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) int result; __u8 *namespace; __u16 no_namespaces; ncp_init_request(server); ncp_add_byte(server, 24); /* Subfunction: Get Name Spaces Loaded */ ncp_add_word(server, 0); ncp_add_byte(server, volume); if ((result = ncp_request(server, 87)) != 0) { ncp_unlock_server(server); return NW_NS_DOS; /* not result ?? */ } result = NW_NS_DOS; no_namespaces = ncp_reply_le16(server, 0); namespace = ncp_reply_data(server, 2); while (no_namespaces > 0) { DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); #ifdef CONFIG_NCPFS_NFS_NS if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) { result = NW_NS_NFS; break; } #endif /* CONFIG_NCPFS_NFS_NS */ #ifdef CONFIG_NCPFS_OS2_NS if ((*namespace == NW_NS_OS2) && !(server->m.flags&NCP_MOUNT_NO_OS2)) { result = NW_NS_OS2; } #endif /* CONFIG_NCPFS_OS2_NS */ namespace += 1; no_namespaces -= 1; } ncp_unlock_server(server); return result; #else /* neither OS2 nor NFS - only DOS */ return NW_NS_DOS; #endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ } static int ncp_ObtainSpecificDirBase(struct ncp_server *server, __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, char *path, /* At most 1 component */ __le32 *dirEntNum, __le32 *DosDirNum) { int result; ncp_init_request(server); ncp_add_byte(server, 6); /* subfunction */ ncp_add_byte(server, nsSrc); ncp_add_byte(server, nsDst); ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ ncp_add_dword(server, RIM_ALL); ncp_add_handle_path(server, vol_num, dir_base, 1, path); if ((result = ncp_request(server, 87)) != 0) { ncp_unlock_server(server); return result; } if (dirEntNum) *dirEntNum = ncp_reply_dword(server, 0x30); if (DosDirNum) *DosDirNum = ncp_reply_dword(server, 0x34); ncp_unlock_server(server); return 0; } int ncp_mount_subdir(struct ncp_server *server, __u8 volNumber, __u8 srcNS, __le32 dirEntNum, __u32* volume, __le32* newDirEnt, __le32* newDosEnt) { int dstNS; int result; dstNS = ncp_get_known_namespace(server, volNumber); if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) { return result; } server->name_space[volNumber] = dstNS; *volume = volNumber; server->m.mounted_vol[1] = 0; server->m.mounted_vol[0] = 'X'; return 0; } int ncp_get_volume_root(struct ncp_server *server, const char *volname, __u32* volume, __le32* dirent, __le32* dosdirent) { int result; __u8 volnum; DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); ncp_init_request(server); ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ ncp_add_byte(server, 0); /* DOS namespace */ ncp_add_byte(server, 0); /* reserved */ ncp_add_byte(server, 0); /* reserved */ ncp_add_byte(server, 0); /* reserved */ ncp_add_byte(server, 0); /* faked volume number */ ncp_add_dword(server, 0); /* faked dir_base */ ncp_add_byte(server, 0xff); /* Don't have a dir_base */ ncp_add_byte(server, 1); /* 1 path component */ ncp_add_pstring(server, volname); if ((result = ncp_request(server, 87)) != 0) { ncp_unlock_server(server); return result; } *dirent = *dosdirent = ncp_reply_dword(server, 4); volnum = ncp_reply_byte(server, 8); ncp_unlock_server(server); *volume = volnum; server->name_space[volnum] = ncp_get_known_namespace(server, volnum); DPRINTK("lookup_vol: namespace[%d] = %d\n", volnum, server->name_space[volnum]); return 0; } int ncp_lookup_volume(struct ncp_server *server, const char *volname, struct nw_info_struct *target) { int result; memset(target, 0, sizeof(*target)); result = ncp_get_volume_root(server, volname, &target->volNumber, &target->dirEntNum, &target->DosDirNum); if (result) { return result; } target->nameLen = strlen(volname); memcpy(target->entryName, volname, target->nameLen+1); target->attributes = aDIR; /* set dates to Jan 1, 1986 00:00 */ target->creationTime = target->modifyTime = cpu_to_le16(0x0000); target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); target->nfs.mode = 0; return 0; } int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, struct inode *dir, const char *path, __le32 info_mask, const struct nw_modify_dos_info *info) { __u8 volnum = NCP_FINFO(dir)->volNumber; __le32 dirent = NCP_FINFO(dir)->dirEntNum; int result; ncp_init_request(server); ncp_add_byte(server, 7); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, 0); /* reserved */ ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ ncp_add_dword(server, info_mask); ncp_add_mem(server, info, sizeof(*info)); ncp_add_handle_path(server, volnum, dirent, 1, path); result = ncp_request(server, 87); ncp_unlock_server(server); return result; } int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, struct inode *dir, __le32 info_mask, const struct nw_modify_dos_info *info) { return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, info_mask, info); } #ifdef CONFIG_NCPFS_NFS_NS int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, __u32 mode, __u32 rdev) { int result = 0; if (server->name_space[volnum] == NW_NS_NFS) { ncp_init_request(server); ncp_add_byte(server, 25); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, NW_NS_NFS); ncp_add_byte(server, volnum); ncp_add_dword(server, dirent); /* we must always operate on both nlinks and rdev, otherwise rdev is not set */ ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); ncp_add_dword_lh(server, mode); ncp_add_dword_lh(server, 1); /* nlinks */ ncp_add_dword_lh(server, rdev); result = ncp_request(server, 87); ncp_unlock_server(server); } return result; } #endif static int ncp_DeleteNSEntry(struct ncp_server *server, __u8 have_dir_base, __u8 volnum, __le32 dirent, char* name, __u8 ns, __le16 attr) { int result; ncp_init_request(server); ncp_add_byte(server, 8); /* subfunction */ ncp_add_byte(server, ns); ncp_add_byte(server, 0); /* reserved */ ncp_add_word(server, attr); /* search attribs: all */ ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); result = ncp_request(server, 87); ncp_unlock_server(server); return result; } int ncp_del_file_or_subdir2(struct ncp_server *server, struct dentry *dentry) { struct inode *inode = dentry->d_inode; __u8 volnum; __le32 dirent; if (!inode) { #ifdef CONFIG_NCPFS_DEBUGDENTRY PRINTK("ncpfs: ncpdel2: dentry->d_inode == NULL\n"); #endif return 0xFF; /* Any error */ } volnum = NCP_FINFO(inode)->volNumber; dirent = NCP_FINFO(inode)->DosDirNum; return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); } int ncp_del_file_or_subdir(struct ncp_server *server, struct inode *dir, char *name) { __u8 volnum = NCP_FINFO(dir)->volNumber; __le32 dirent = NCP_FINFO(dir)->dirEntNum; #ifdef CONFIG_NCPFS_NFS_NS if (server->name_space[volnum]==NW_NS_NFS) { int result; result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent); if (result) return result; return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); } else #endif /* CONFIG_NCPFS_NFS_NS */ return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006)); } static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) { __le16 *dest = (__le16 *) ret; dest[1] = cpu_to_le16(v0); dest[2] = cpu_to_le16(v1); dest[0] = cpu_to_le16(v0 + 1); return; } /* If both dir and name are NULL, then in target there's already a looked-up entry that wants to be opened. */ int ncp_open_create_file_or_subdir(struct ncp_server *server, struct inode *dir, char *name, int open_create_mode, __le32 create_attributes, __le16 desired_acc_rights, struct ncp_entry_info *target) { __le16 search_attribs = cpu_to_le16(0x0006); __u8 volnum; __le32 dirent; int result; volnum = NCP_FINFO(dir)->volNumber; dirent = NCP_FINFO(dir)->dirEntNum; if ((create_attributes & aDIR) != 0) { search_attribs |= cpu_to_le16(0x8000); } ncp_init_request(server); ncp_add_byte(server, 1); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, open_create_mode); ncp_add_word(server, search_attribs); ncp_add_dword(server, RIM_ALL); ncp_add_dword(server, create_attributes); /* The desired acc rights seem to be the inherited rights mask for directories */ ncp_add_word(server, desired_acc_rights); ncp_add_handle_path(server, volnum, dirent, 1, name); if ((result = ncp_request(server, 87)) != 0) goto out; if (!(create_attributes & aDIR)) target->opened = 1; /* in target there's a new finfo to fill */ ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); target->volume = target->i.volNumber; ConvertToNWfromDWORD(ncp_reply_le16(server, 0), ncp_reply_le16(server, 2), target->file_handle); ncp_unlock_server(server); (void)ncp_obtain_nfs_info(server, &(target->i)); return 0; out: ncp_unlock_server(server); return result; } int ncp_initialize_search(struct ncp_server *server, struct inode *dir, struct nw_search_sequence *target) { __u8 volnum = NCP_FINFO(dir)->volNumber; __le32 dirent = NCP_FINFO(dir)->dirEntNum; int result; ncp_init_request(server); ncp_add_byte(server, 2); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, 0); /* reserved */ ncp_add_handle_path(server, volnum, dirent, 1, NULL); result = ncp_request(server, 87); if (result) goto out; memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); out: ncp_unlock_server(server); return result; } int ncp_search_for_fileset(struct ncp_server *server, struct nw_search_sequence *seq, int* more, int* cnt, char* buffer, size_t bufsize, char** rbuf, size_t* rsize) { int result; ncp_init_request(server); ncp_add_byte(server, 20); ncp_add_byte(server, server->name_space[seq->volNumber]); ncp_add_byte(server, 0); /* datastream */ ncp_add_word(server, cpu_to_le16(0x8006)); ncp_add_dword(server, RIM_ALL); ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ ncp_add_mem(server, seq, 9); #ifdef CONFIG_NCPFS_NFS_NS if (server->name_space[seq->volNumber] == NW_NS_NFS) { ncp_add_byte(server, 0); /* 0 byte pattern */ } else #endif { ncp_add_byte(server, 2); /* 2 byte pattern */ ncp_add_byte(server, 0xff); /* following is a wildcard */ ncp_add_byte(server, '*'); } result = ncp_request2(server, 87, buffer, bufsize); if (result) { ncp_unlock_server(server); return result; } if (server->ncp_reply_size < 12) { ncp_unlock_server(server); return 0xFF; } *rsize = server->ncp_reply_size - 12; ncp_unlock_server(server); buffer = buffer + sizeof(struct ncp_reply_header); *rbuf = buffer + 12; *cnt = WVAL_LH(buffer + 10); *more = BVAL(buffer + 9); memcpy(seq, buffer, 9); return 0; } static int ncp_RenameNSEntry(struct ncp_server *server, struct inode *old_dir, char *old_name, __le16 old_type, struct inode *new_dir, char *new_name) { int result = -EINVAL; if ((old_dir == NULL) || (old_name == NULL) || (new_dir == NULL) || (new_name == NULL)) goto out; ncp_init_request(server); ncp_add_byte(server, 4); /* subfunction */ ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); ncp_add_byte(server, 1); /* rename flag */ ncp_add_word(server, old_type); /* search attributes */ /* source Handle Path */ ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); ncp_add_byte(server, 1); ncp_add_byte(server, 1); /* 1 source component */ /* dest Handle Path */ ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); ncp_add_byte(server, 1); ncp_add_byte(server, 1); /* 1 destination component */ /* source path string */ ncp_add_pstring(server, old_name); /* dest path string */ ncp_add_pstring(server, new_name); result = ncp_request(server, 87); ncp_unlock_server(server); out: return result; } int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, struct inode *old_dir, char *old_name, struct inode *new_dir, char *new_name) { int result; __le16 old_type = cpu_to_le16(0x06); /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, new_dir, new_name); if (result == 0xFF) /* File Not Found, try directory */ { old_type = cpu_to_le16(0x16); result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, new_dir, new_name); } if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ result = ncp_del_file_or_subdir(server, new_dir, new_name); if (result != 0) return -EACCES; result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, new_dir, new_name); return result; } /* We have to transfer to/from user space */ int ncp_read_kernel(struct ncp_server *server, const char *file_id, __u32 offset, __u16 to_read, char *target, int *bytes_read) { char *source; int result; ncp_init_request(server); ncp_add_byte(server, 0); ncp_add_mem(server, file_id, 6); ncp_add_be32(server, offset); ncp_add_be16(server, to_read); if ((result = ncp_request(server, 72)) != 0) { goto out; } *bytes_read = ncp_reply_be16(server, 0); source = ncp_reply_data(server, 2 + (offset & 1)); memcpy(target, source, *bytes_read); out: ncp_unlock_server(server); return result; } /* There is a problem... egrep and some other silly tools do: x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); read(<ncpfs fd>, x, 32768); Now copying read result by copy_to_user causes pagefault. This pagefault could not be handled because of server was locked due to read. So we have to use temporary buffer. So ncp_unlock_server must be done before copy_to_user (and for write, copy_from_user must be done before ncp_init_request... same applies for send raw packet ioctl). Because of file is normally read in bigger chunks, caller provides kmalloced (vmalloced) chunk of memory with size >= to_read... */ int ncp_read_bounce(struct ncp_server *server, const char *file_id, __u32 offset, __u16 to_read, char __user *target, int *bytes_read, void* bounce, __u32 bufsize) { int result; ncp_init_request(server); ncp_add_byte(server, 0); ncp_add_mem(server, file_id, 6); ncp_add_be32(server, offset); ncp_add_be16(server, to_read); result = ncp_request2(server, 72, bounce, bufsize); ncp_unlock_server(server); if (!result) { int len = be16_to_cpu(get_unaligned((__be16*)((char*)bounce + sizeof(struct ncp_reply_header)))); result = -EIO; if (len <= to_read) { char* source; source = (char*)bounce + sizeof(struct ncp_reply_header) + 2 + (offset & 1); *bytes_read = len; result = 0; if (copy_to_user(target, source, len)) result = -EFAULT; } } return result; } int ncp_write_kernel(struct ncp_server *server, const char *file_id, __u32 offset, __u16 to_write, const char *source, int *bytes_written) { int result; ncp_init_request(server); ncp_add_byte(server, 0); ncp_add_mem(server, file_id, 6); ncp_add_be32(server, offset); ncp_add_be16(server, to_write); ncp_add_mem(server, source, to_write); if ((result = ncp_request(server, 73)) == 0) *bytes_written = to_write; ncp_unlock_server(server); return result; } #ifdef CONFIG_NCPFS_IOCTL_LOCKING int ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, __u8 locktype, __u32 offset, __u32 length, __u16 timeout) { int result; ncp_init_request(server); ncp_add_byte(server, locktype); ncp_add_mem(server, file_id, 6); ncp_add_be32(server, offset); ncp_add_be32(server, length); ncp_add_be16(server, timeout); if ((result = ncp_request(server, 0x1A)) != 0) { ncp_unlock_server(server); return result; } ncp_unlock_server(server); return 0; } int ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, __u32 offset, __u32 length) { int result; ncp_init_request(server); ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ ncp_add_mem(server, file_id, 6); ncp_add_be32(server, offset); ncp_add_be32(server, length); if ((result = ncp_request(server, 0x1E)) != 0) { ncp_unlock_server(server); return result; } ncp_unlock_server(server); return 0; } #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ #ifdef CONFIG_NCPFS_NLS /* This are the NLS conversion routines with inspirations and code parts * from the vfat file system and hints from Petr Vandrovec. */ int ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, const unsigned char *iname, unsigned int ilen, int cc) { struct nls_table *in = server->nls_io; struct nls_table *out = server->nls_vol; unsigned char *vname_start; unsigned char *vname_end; const unsigned char *iname_end; iname_end = iname + ilen; vname_start = vname; vname_end = vname + *vlen - 1; while (iname < iname_end) { int chl; wchar_t ec; if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { int k; k = utf8_mbtowc(&ec, iname, iname_end - iname); if (k < 0) return -EINVAL; iname += k; } else { if (*iname == NCP_ESC) { int k; if (iname_end - iname < 5) goto nospec; ec = 0; for (k = 1; k < 5; k++) { unsigned char nc; nc = iname[k] - '0'; if (nc >= 10) { nc -= 'A' - '0' - 10; if ((nc < 10) || (nc > 15)) { goto nospec; } } ec = (ec << 4) | nc; } iname += 5; } else { nospec:; if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) return chl; iname += chl; } } /* unitoupper should be here! */ chl = out->uni2char(ec, vname, vname_end - vname); if (chl < 0) return chl; /* this is wrong... */ if (cc) { int chi; for (chi = 0; chi < chl; chi++){ vname[chi] = ncp_toupper(out, vname[chi]); } } vname += chl; } *vname = 0; *vlen = vname - vname_start; return 0; } int ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, const unsigned char *vname, unsigned int vlen, int cc) { struct nls_table *in = server->nls_vol; struct nls_table *out = server->nls_io; const unsigned char *vname_end; unsigned char *iname_start; unsigned char *iname_end; unsigned char *vname_cc; int err; vname_cc = NULL; if (cc) { int i; /* this is wrong! */ vname_cc = kmalloc(vlen, GFP_KERNEL); if (!vname_cc) return -ENOMEM; for (i = 0; i < vlen; i++) vname_cc[i] = ncp_tolower(in, vname[i]); vname = vname_cc; } iname_start = iname; iname_end = iname + *ilen - 1; vname_end = vname + vlen; while (vname < vname_end) { wchar_t ec; int chl; if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { err = chl; goto quit; } vname += chl; /* unitolower should be here! */ if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { int k; k = utf8_wctomb(iname, ec, iname_end - iname); if (k < 0) { err = -ENAMETOOLONG; goto quit; } iname += k; } else { if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { iname += chl; } else { int k; if (iname_end - iname < 5) { err = -ENAMETOOLONG; goto quit; } *iname = NCP_ESC; for (k = 4; k > 0; k--) { unsigned char v; v = (ec & 0xF) + '0'; if (v > '9') { v += 'A' - '9' - 1; } iname[k] = v; ec >>= 4; } iname += 5; } } } *iname = 0; *ilen = iname - iname_start; err = 0; quit:; if (cc) kfree(vname_cc); return err; } #else int ncp__io2vol(unsigned char *vname, unsigned int *vlen, const unsigned char *iname, unsigned int ilen, int cc) { int i; if (*vlen <= ilen) return -ENAMETOOLONG; if (cc) for (i = 0; i < ilen; i++) { *vname = toupper(*iname); vname++; iname++; } else { memmove(vname, iname, ilen); vname += ilen; } *vlen = ilen; *vname = 0; return 0; } int ncp__vol2io(unsigned char *iname, unsigned int *ilen, const unsigned char *vname, unsigned int vlen, int cc) { int i; if (*ilen <= vlen) return -ENAMETOOLONG; if (cc) for (i = 0; i < vlen; i++) { *iname = tolower(*vname); iname++; vname++; } else { memmove(iname, vname, vlen); iname += vlen; } *ilen = vlen; *iname = 0; return 0; } #endif