1315 lines
32 KiB
C
1315 lines
32 KiB
C
/*
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* ncplib_kernel.c
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*
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* Copyright (C) 1995, 1996 by Volker Lendecke
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* Modified for big endian by J.F. Chadima and David S. Miller
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* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
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* Modified 1999 Wolfram Pienkoss for NLS
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* Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
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*
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*/
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#include "ncplib_kernel.h"
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static inline void assert_server_locked(struct ncp_server *server)
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{
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if (server->lock == 0) {
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DPRINTK("ncpfs: server not locked!\n");
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}
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}
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static void ncp_add_byte(struct ncp_server *server, __u8 x)
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{
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assert_server_locked(server);
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*(__u8 *) (&(server->packet[server->current_size])) = x;
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server->current_size += 1;
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return;
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}
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static void ncp_add_word(struct ncp_server *server, __le16 x)
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{
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assert_server_locked(server);
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put_unaligned(x, (__le16 *) (&(server->packet[server->current_size])));
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server->current_size += 2;
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return;
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}
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static void ncp_add_be16(struct ncp_server *server, __u16 x)
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{
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assert_server_locked(server);
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put_unaligned(cpu_to_be16(x), (__be16 *) (&(server->packet[server->current_size])));
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server->current_size += 2;
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}
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static void ncp_add_dword(struct ncp_server *server, __le32 x)
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{
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assert_server_locked(server);
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put_unaligned(x, (__le32 *) (&(server->packet[server->current_size])));
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server->current_size += 4;
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return;
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}
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static void ncp_add_be32(struct ncp_server *server, __u32 x)
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{
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assert_server_locked(server);
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put_unaligned(cpu_to_be32(x), (__be32 *)(&(server->packet[server->current_size])));
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server->current_size += 4;
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}
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static inline void ncp_add_dword_lh(struct ncp_server *server, __u32 x) {
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ncp_add_dword(server, cpu_to_le32(x));
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}
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static void ncp_add_mem(struct ncp_server *server, const void *source, int size)
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{
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assert_server_locked(server);
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memcpy(&(server->packet[server->current_size]), source, size);
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server->current_size += size;
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return;
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}
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static void ncp_add_pstring(struct ncp_server *server, const char *s)
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{
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int len = strlen(s);
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assert_server_locked(server);
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if (len > 255) {
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DPRINTK("ncpfs: string too long: %s\n", s);
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len = 255;
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}
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ncp_add_byte(server, len);
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ncp_add_mem(server, s, len);
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return;
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}
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static inline void ncp_init_request(struct ncp_server *server)
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{
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ncp_lock_server(server);
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server->current_size = sizeof(struct ncp_request_header);
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server->has_subfunction = 0;
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}
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static inline void ncp_init_request_s(struct ncp_server *server, int subfunction)
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{
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ncp_lock_server(server);
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server->current_size = sizeof(struct ncp_request_header) + 2;
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ncp_add_byte(server, subfunction);
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server->has_subfunction = 1;
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}
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static inline char *
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ncp_reply_data(struct ncp_server *server, int offset)
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{
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return &(server->packet[sizeof(struct ncp_reply_header) + offset]);
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}
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static inline __u8 BVAL(void* data)
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{
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return get_unaligned((__u8*)data);
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}
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static __u8
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ncp_reply_byte(struct ncp_server *server, int offset)
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{
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return get_unaligned((__u8 *) ncp_reply_data(server, offset));
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}
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static inline __u16 WVAL_LH(void* data)
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{
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return le16_to_cpu(get_unaligned((__le16*)data));
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}
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static __u16
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ncp_reply_le16(struct ncp_server *server, int offset)
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{
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return le16_to_cpu(get_unaligned((__le16 *) ncp_reply_data(server, offset)));
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}
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static __u16
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ncp_reply_be16(struct ncp_server *server, int offset)
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{
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return be16_to_cpu(get_unaligned((__be16 *) ncp_reply_data(server, offset)));
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}
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static inline __u32 DVAL_LH(void* data)
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{
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return le32_to_cpu(get_unaligned((__le32*)data));
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}
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static __le32
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ncp_reply_dword(struct ncp_server *server, int offset)
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{
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return get_unaligned((__le32 *) ncp_reply_data(server, offset));
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}
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static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) {
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return le32_to_cpu(ncp_reply_dword(server, offset));
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}
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int
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ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target)
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{
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int result;
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ncp_init_request(server);
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ncp_add_be16(server, size);
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if ((result = ncp_request(server, 33)) != 0) {
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ncp_unlock_server(server);
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return result;
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}
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*target = min_t(unsigned int, ncp_reply_be16(server, 0), size);
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ncp_unlock_server(server);
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return 0;
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}
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/* options:
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* bit 0 ipx checksum
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* bit 1 packet signing
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*/
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int
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ncp_negotiate_size_and_options(struct ncp_server *server,
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int size, int options, int *ret_size, int *ret_options) {
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int result;
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/* there is minimum */
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if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE;
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ncp_init_request(server);
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ncp_add_be16(server, size);
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ncp_add_byte(server, options);
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if ((result = ncp_request(server, 0x61)) != 0)
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{
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ncp_unlock_server(server);
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return result;
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}
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/* NCP over UDP returns 0 (!!!) */
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result = ncp_reply_be16(server, 0);
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if (result >= NCP_BLOCK_SIZE)
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size = min(result, size);
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*ret_size = size;
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*ret_options = ncp_reply_byte(server, 4);
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ncp_unlock_server(server);
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return 0;
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}
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int ncp_get_volume_info_with_number(struct ncp_server* server,
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int n, struct ncp_volume_info* target) {
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int result;
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int len;
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ncp_init_request_s(server, 44);
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ncp_add_byte(server, n);
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if ((result = ncp_request(server, 22)) != 0) {
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goto out;
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}
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target->total_blocks = ncp_reply_dword_lh(server, 0);
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target->free_blocks = ncp_reply_dword_lh(server, 4);
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target->purgeable_blocks = ncp_reply_dword_lh(server, 8);
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target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12);
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target->total_dir_entries = ncp_reply_dword_lh(server, 16);
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target->available_dir_entries = ncp_reply_dword_lh(server, 20);
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target->sectors_per_block = ncp_reply_byte(server, 28);
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memset(&(target->volume_name), 0, sizeof(target->volume_name));
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result = -EIO;
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len = ncp_reply_byte(server, 29);
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if (len > NCP_VOLNAME_LEN) {
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DPRINTK("ncpfs: volume name too long: %d\n", len);
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goto out;
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}
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memcpy(&(target->volume_name), ncp_reply_data(server, 30), len);
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result = 0;
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out:
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ncp_unlock_server(server);
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return result;
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}
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int ncp_get_directory_info(struct ncp_server* server, __u8 n,
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struct ncp_volume_info* target) {
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int result;
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int len;
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ncp_init_request_s(server, 45);
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ncp_add_byte(server, n);
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if ((result = ncp_request(server, 22)) != 0) {
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goto out;
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}
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target->total_blocks = ncp_reply_dword_lh(server, 0);
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target->free_blocks = ncp_reply_dword_lh(server, 4);
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target->purgeable_blocks = 0;
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target->not_yet_purgeable_blocks = 0;
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target->total_dir_entries = ncp_reply_dword_lh(server, 8);
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target->available_dir_entries = ncp_reply_dword_lh(server, 12);
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target->sectors_per_block = ncp_reply_byte(server, 20);
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memset(&(target->volume_name), 0, sizeof(target->volume_name));
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result = -EIO;
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len = ncp_reply_byte(server, 21);
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if (len > NCP_VOLNAME_LEN) {
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DPRINTK("ncpfs: volume name too long: %d\n", len);
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goto out;
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}
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memcpy(&(target->volume_name), ncp_reply_data(server, 22), len);
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result = 0;
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out:
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ncp_unlock_server(server);
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return result;
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}
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int
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ncp_close_file(struct ncp_server *server, const char *file_id)
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{
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int result;
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ncp_init_request(server);
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ncp_add_byte(server, 0);
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ncp_add_mem(server, file_id, 6);
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result = ncp_request(server, 66);
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ncp_unlock_server(server);
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return result;
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}
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int
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ncp_make_closed(struct inode *inode)
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{
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int err;
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err = 0;
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mutex_lock(&NCP_FINFO(inode)->open_mutex);
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if (atomic_read(&NCP_FINFO(inode)->opened) == 1) {
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atomic_set(&NCP_FINFO(inode)->opened, 0);
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err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle);
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if (!err)
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PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n",
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NCP_FINFO(inode)->volNumber,
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NCP_FINFO(inode)->dirEntNum, err);
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}
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mutex_unlock(&NCP_FINFO(inode)->open_mutex);
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return err;
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}
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static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num,
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__le32 dir_base, int have_dir_base,
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const char *path)
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{
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ncp_add_byte(server, vol_num);
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ncp_add_dword(server, dir_base);
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if (have_dir_base != 0) {
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ncp_add_byte(server, 1); /* dir_base */
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} else {
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ncp_add_byte(server, 0xff); /* no handle */
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}
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if (path != NULL) {
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ncp_add_byte(server, 1); /* 1 component */
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ncp_add_pstring(server, path);
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} else {
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ncp_add_byte(server, 0);
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}
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}
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int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent,
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__u8* dirhandle) {
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int result;
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ncp_init_request(server);
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ncp_add_byte(server, 12); /* subfunction */
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ncp_add_byte(server, NW_NS_DOS);
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ncp_add_byte(server, 0);
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ncp_add_word(server, 0);
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ncp_add_handle_path(server, volnum, dirent, 1, NULL);
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if ((result = ncp_request(server, 87)) == 0) {
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*dirhandle = ncp_reply_byte(server, 0);
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}
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ncp_unlock_server(server);
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return result;
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}
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int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) {
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int result;
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ncp_init_request_s(server, 20);
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ncp_add_byte(server, dirhandle);
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result = ncp_request(server, 22);
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ncp_unlock_server(server);
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return result;
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}
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void ncp_extract_file_info(void *structure, struct nw_info_struct *target)
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{
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__u8 *name_len;
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const int info_struct_size = offsetof(struct nw_info_struct, nameLen);
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memcpy(target, structure, info_struct_size);
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name_len = structure + info_struct_size;
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target->nameLen = *name_len;
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memcpy(target->entryName, name_len + 1, *name_len);
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target->entryName[*name_len] = '\0';
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target->volNumber = le32_to_cpu(target->volNumber);
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return;
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}
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#ifdef CONFIG_NCPFS_NFS_NS
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static inline void ncp_extract_nfs_info(unsigned char *structure,
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struct nw_nfs_info *target)
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{
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target->mode = DVAL_LH(structure);
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target->rdev = DVAL_LH(structure + 8);
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}
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#endif
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int ncp_obtain_nfs_info(struct ncp_server *server,
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struct nw_info_struct *target)
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{
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int result = 0;
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#ifdef CONFIG_NCPFS_NFS_NS
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__u32 volnum = target->volNumber;
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if (ncp_is_nfs_extras(server, volnum)) {
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ncp_init_request(server);
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ncp_add_byte(server, 19); /* subfunction */
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ncp_add_byte(server, server->name_space[volnum]);
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ncp_add_byte(server, NW_NS_NFS);
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ncp_add_byte(server, 0);
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ncp_add_byte(server, volnum);
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ncp_add_dword(server, target->dirEntNum);
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/* We must retrieve both nlinks and rdev, otherwise some server versions
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report zeroes instead of valid data */
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ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV);
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if ((result = ncp_request(server, 87)) == 0) {
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ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs);
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DPRINTK(KERN_DEBUG
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"ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n",
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target->entryName, target->nfs.mode,
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target->nfs.rdev);
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} else {
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target->nfs.mode = 0;
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target->nfs.rdev = 0;
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}
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ncp_unlock_server(server);
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} else
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#endif
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{
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target->nfs.mode = 0;
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target->nfs.rdev = 0;
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}
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return result;
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}
|
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|
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/*
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* Returns information for a (one-component) name relative to
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* the specified directory.
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*/
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int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path,
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struct nw_info_struct *target)
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{
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__u8 volnum = NCP_FINFO(dir)->volNumber;
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__le32 dirent = NCP_FINFO(dir)->dirEntNum;
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int result;
|
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if (target == NULL) {
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printk(KERN_ERR "ncp_obtain_info: invalid call\n");
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return -EINVAL;
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}
|
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ncp_init_request(server);
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ncp_add_byte(server, 6); /* subfunction */
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ncp_add_byte(server, server->name_space[volnum]);
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ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */
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ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */
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ncp_add_dword(server, RIM_ALL);
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ncp_add_handle_path(server, volnum, dirent, 1, path);
|
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|
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if ((result = ncp_request(server, 87)) != 0)
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goto out;
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ncp_extract_file_info(ncp_reply_data(server, 0), target);
|
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ncp_unlock_server(server);
|
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result = ncp_obtain_nfs_info(server, target);
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return result;
|
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|
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out:
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ncp_unlock_server(server);
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return result;
|
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}
|
|
|
|
#ifdef CONFIG_NCPFS_NFS_NS
|
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static int
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ncp_obtain_DOS_dir_base(struct ncp_server *server,
|
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__u8 volnum, __le32 dirent,
|
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char *path, /* At most 1 component */
|
|
__le32 *DOS_dir_base)
|
|
{
|
|
int result;
|
|
|
|
ncp_init_request(server);
|
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ncp_add_byte(server, 6); /* subfunction */
|
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ncp_add_byte(server, server->name_space[volnum]);
|
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ncp_add_byte(server, server->name_space[volnum]);
|
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ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */
|
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ncp_add_dword(server, RIM_DIRECTORY);
|
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ncp_add_handle_path(server, volnum, dirent, 1, path);
|
|
|
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if ((result = ncp_request(server, 87)) == 0)
|
|
{
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if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34);
|
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}
|
|
ncp_unlock_server(server);
|
|
return result;
|
|
}
|
|
#endif /* CONFIG_NCPFS_NFS_NS */
|
|
|
|
static inline int
|
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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);
|
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ncp_add_byte(server, volume);
|
|
|
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if ((result = ncp_request(server, 87)) != 0) {
|
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ncp_unlock_server(server);
|
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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
|