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-rw-r--r--fs/ncpfs/ncplib_kernel.c1355
1 files changed, 1355 insertions, 0 deletions
diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c
new file mode 100644
index 000000000000..e4eb5ed4bee4
--- /dev/null
+++ b/fs/ncpfs/ncplib_kernel.c
@@ -0,0 +1,1355 @@
+/*
+ * 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;
+}
+
+/* Search for everything */
+int ncp_search_for_file_or_subdir(struct ncp_server *server,
+ struct nw_search_sequence *seq,
+ struct nw_info_struct *target)
+{
+ int result;
+
+ ncp_init_request(server);
+ ncp_add_byte(server, 3); /* subfunction */
+ ncp_add_byte(server, server->name_space[seq->volNumber]);
+ ncp_add_byte(server, 0); /* data stream (???) */
+ ncp_add_word(server, cpu_to_le16(0x8006)); /* Search attribs */
+ ncp_add_dword(server, RIM_ALL); /* return info mask */
+ 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, '*');
+ }
+
+ if ((result = ncp_request(server, 87)) != 0)
+ goto out;
+ memcpy(seq, ncp_reply_data(server, 0), sizeof(*seq));
+ ncp_extract_file_info(ncp_reply_data(server, 10), target);
+
+ ncp_unlock_server(server);
+
+ result = ncp_obtain_nfs_info(server, target);
+ return result;
+
+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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 03:27:25 +0000