| /* |
| * 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 |
| * |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include "ncp_fs.h" |
| |
| static inline void assert_server_locked(struct ncp_server *server) |
| { |
| if (server->lock == 0) { |
| ncp_dbg(1, "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) { |
| ncp_dbg(1, "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(const void *data) |
| { |
| return *(const u8 *)data; |
| } |
| |
| static u8 ncp_reply_byte(struct ncp_server *server, int offset) |
| { |
| return *(const u8 *)ncp_reply_data(server, offset); |
| } |
| |
| static inline u16 WVAL_LH(const void *data) |
| { |
| return get_unaligned_le16(data); |
| } |
| |
| static u16 |
| ncp_reply_le16(struct ncp_server *server, int offset) |
| { |
| return get_unaligned_le16(ncp_reply_data(server, offset)); |
| } |
| |
| static u16 |
| ncp_reply_be16(struct ncp_server *server, int offset) |
| { |
| return get_unaligned_be16(ncp_reply_data(server, offset)); |
| } |
| |
| static inline u32 DVAL_LH(const void *data) |
| { |
| return 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) { |
| ncp_dbg(1, "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) { |
| ncp_dbg(1, "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; |
| mutex_lock(&NCP_FINFO(inode)->open_mutex); |
| 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) |
| ncp_vdbg("volnum=%d, dirent=%u, error=%d\n", |
| NCP_FINFO(inode)->volNumber, |
| NCP_FINFO(inode)->dirEntNum, err); |
| } |
| mutex_unlock(&NCP_FINFO(inode)->open_mutex); |
| 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(const void *structure, struct nw_info_struct *target) |
| { |
| const __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(const 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); |
| ncp_dbg(1, "(%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, const char *path, |
| struct nw_info_struct *target) |
| { |
| __u8 volnum = NCP_FINFO(dir)->volNumber; |
| __le32 dirent = NCP_FINFO(dir)->dirEntNum; |
| int result; |
| |
| if (target == NULL) { |
| pr_err("%s: invalid call\n", __func__); |
| 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 ns, __u8 volnum, __le32 dirent, |
| const 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, ns); |
| ncp_add_byte(server, ns); |
| 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) { |
| ncp_dbg(1, "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) */ |
| } |
| |
| int |
| ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns) |
| { |
| int ns = ncp_get_known_namespace(server, volume); |
| |
| if (ret_ns) |
| *ret_ns = ns; |
| |
| ncp_dbg(1, "namespace[%d] = %d\n", volume, server->name_space[volume]); |
| |
| if (server->name_space[volume] == ns) |
| return 0; |
| server->name_space[volume] = ns; |
| return 1; |
| } |
| |
| static int |
| ncp_ObtainSpecificDirBase(struct ncp_server *server, |
| __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, |
| const 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; |
| |
| ncp_update_known_namespace(server, volNumber, &dstNS); |
| if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, |
| dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) |
| { |
| return result; |
| } |
| *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; |
| |
| ncp_dbg(1, "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); |
| *volume = ncp_reply_byte(server, 8); |
| ncp_unlock_server(server); |
| 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; |
| } |
| ncp_update_known_namespace(server, target->volNumber, NULL); |
| 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; |
| |
| ncp_init_request(server); |
| if (server->name_space[volnum] == NW_NS_NFS) { |
| 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, |
| const 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) { |
| 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, const char *name) |
| { |
| __u8 volnum = NCP_FINFO(dir)->volNumber; |
| __le32 dirent = NCP_FINFO(dir)->dirEntNum; |
| int name_space; |
| |
| name_space = server->name_space[volnum]; |
| #ifdef CONFIG_NCPFS_NFS_NS |
| if (name_space == NW_NS_NFS) |
| { |
| int result; |
| |
| result=ncp_obtain_DOS_dir_base(server, name_space, volnum, dirent, name, &dirent); |
| if (result) return result; |
| name = NULL; |
| name_space = NW_NS_DOS; |
| } |
| #endif /* CONFIG_NCPFS_NFS_NS */ |
| return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, name_space, 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, const 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, const char *old_name, __le16 old_type, |
| struct inode *new_dir, const 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, const char *old_name, |
| struct inode *new_dir, const 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) |
| { |
| const 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, struct iov_iter *to, |
| 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 = 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_iter(source, len, to) != 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; |
| unicode_t u; |
| |
| k = utf8_to_utf32(iname, iname_end - iname, &u); |
| if (k < 0 || u > MAX_WCHAR_T) |
| return -EINVAL; |
| iname += k; |
| ec = u; |
| } 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 = utf32_to_utf8(ec, iname, 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 |