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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [ncpfs/] [ncplib_kernel.c] - Blame information for rev 1777

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/*
 *  ncplib_kernel.c
 *
 *  Copyright (C) 1995, 1996 by Volker Lendecke
 *
 */
 
#include <linux/config.h>
 
#include "ncplib_kernel.h"
 
typedef __u8  byte;
typedef __u16 word;
typedef __u32 dword;
 
static inline int min(int a, int b)
{
        return a<b ? a : b;
}
 
static 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, byte x)
{
        assert_server_locked(server);
        *(byte *)(&(server->packet[server->current_size])) = x;
        server->current_size += 1;
        return;
}
 
static void
ncp_add_word(struct ncp_server *server, word x)
{
        assert_server_locked(server);
        *(word *)(&(server->packet[server->current_size])) = x;
        server->current_size += 2;
        return;
}
 
static void
ncp_add_dword(struct ncp_server *server, dword x)
{
        assert_server_locked(server);
        *(dword *)(&(server->packet[server->current_size])) = x;
        server->current_size += 4;
        return;
}
 
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_mem_fromfs(struct ncp_server *server, const char *source, int size)
{
        assert_server_locked(server);
        memcpy_fromfs(&(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 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 void
ncp_init_request_s(struct ncp_server *server, int subfunction)
{
        ncp_init_request(server);
        ncp_add_word(server, 0); /* preliminary size */
 
        ncp_add_byte(server, subfunction);
 
        server->has_subfunction = 1;
}
 
static char *
ncp_reply_data(struct ncp_server *server, int offset)
{
        return &(server->packet[sizeof(struct ncp_reply_header) + offset]);
}
 
static byte
ncp_reply_byte(struct ncp_server *server, int offset)
{
        return *(byte *)(ncp_reply_data(server, offset));
}
 
static word
ncp_reply_word(struct ncp_server *server, int offset)
{
        return *(word *)(ncp_reply_data(server, offset));
}
 
static dword
ncp_reply_dword(struct ncp_server *server, int offset)
{
        return *(dword *)(ncp_reply_data(server, offset));
}
 
 
/* 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;
 
        ncp_init_request(server);
        ncp_add_word(server, htons(size));
        ncp_add_byte(server, options);
 
        if ((result = ncp_request(server, 0x61)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        *ret_size = min(ntohs(ncp_reply_word(server, 0)), size);
        *ret_options = ncp_reply_byte(server, 4);
 
        ncp_unlock_server(server);
        return 0;
}
 
int
ncp_negotiate_buffersize(struct ncp_server *server,
                         int size, int *target)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_word(server, htons(size));
 
        if ((result = ncp_request(server, 33)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        *target =min(ntohs(ncp_reply_word(server, 0)), size);
 
        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)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        target->total_blocks = ncp_reply_dword(server, 0);
        target->free_blocks  = ncp_reply_dword(server, 4);
        target->purgeable_blocks = ncp_reply_dword(server, 8);
        target->not_yet_purgeable_blocks = ncp_reply_dword(server, 12);
        target->total_dir_entries = ncp_reply_dword(server, 16);
        target->available_dir_entries = ncp_reply_dword(server, 20);
        target->sectors_per_block = ncp_reply_byte(server, 28);
 
        memset(&(target->volume_name), 0, sizeof(target->volume_name));
 
        len = ncp_reply_byte(server, 29);
        if (len > NCP_VOLNAME_LEN)
        {
                DPRINTK("ncpfs: volume name too long: %d\n", len);
                ncp_unlock_server(server);
                return -EIO;
        }
 
        memcpy(&(target->volume_name), ncp_reply_data(server, 30), len);
        ncp_unlock_server(server);
        return 0;
}
 
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;
}
 
static void
ncp_add_handle_path(struct ncp_server *server,
                    __u8 vol_num,
                    __u32 dir_base, int have_dir_base,
                    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);
        }
}
 
static void
ncp_extract_file_info(void *structure, struct nw_info_struct *target)
{
        __u8 *name_len;
        const int info_struct_size = sizeof(struct nw_info_struct) - 257;
 
        memcpy(target, structure, info_struct_size);
        name_len = structure + info_struct_size;
        target->nameLen = *name_len;
        strncpy(target->entryName, name_len+1, *name_len);
        target->entryName[*name_len] = '\0';
        return;
}
 
int
ncp_obtain_info(struct ncp_server *server,
                __u8 vol_num, __u32 dir_base,
                char *path, /* At most 1 component */
                struct nw_info_struct *target)
{
        int result;
 
        if (target == NULL)
        {
                return -EINVAL;
        }
 
        ncp_init_request(server);
        ncp_add_byte(server, 6); /* subfunction */
        ncp_add_byte(server, server->name_space[vol_num]);
        ncp_add_byte(server, server->name_space[vol_num]);
        ncp_add_word(server, 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;
        }
 
        ncp_extract_file_info(ncp_reply_data(server, 0), target);
        ncp_unlock_server(server);
        return 0;
}
 
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;
        }
 
        result=NW_NS_DOS;
        no_namespaces = ncp_reply_word(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, __u32 dir_base,
                char *path, /* At most 1 component */
                __u32 *dirEntNum)
{
        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, 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);
        ncp_unlock_server(server);
        return 0;
}
 
int
ncp_mount_subdir(struct ncp_server *server,
                __u8 volNumber,
                __u8 srcNS, __u32 dirEntNum)
{
        int dstNS;
        int result;
        __u32 newDirEnt;
 
        dstNS = ncp_get_known_namespace(server, volNumber);
        if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber,
                                      dirEntNum, NULL, &newDirEnt)) != 0)
        {
                return result;
        }
        server->name_space[volNumber] = dstNS;
        server->root.finfo.i.volNumber = volNumber;
        server->root.finfo.i.dirEntNum = newDirEnt;
        server->m.mounted_vol[1] = 0;
        server->m.mounted_vol[0] = 'X';
        return 0;
}
 
static int
ncp_obtain_DOS_dir_base(struct ncp_server *server,
                struct nw_info_struct* file,
                char *path, /* At most 1 component */
                __u32 *DOS_dir_base)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_byte(server, 6); /* subfunction */
        ncp_add_byte(server, server->name_space[file->volNumber]);
        ncp_add_byte(server, server->name_space[file->volNumber]);
        ncp_add_word(server, 0x8006); /* get all */
        ncp_add_dword(server, RIM_DIRECTORY);
        ncp_add_handle_path(server, file->volNumber, file->dirEntNum, 1, path);
 
        if ((result = ncp_request(server, 87)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34);
        ncp_unlock_server(server);
        return 0;
}
 
int
ncp_lookup_volume(struct ncp_server *server,
                  char *volname,
                  struct nw_info_struct *target)
{
        int result;
        int volnum;
 
        DPRINTK("ncp_lookup_volume: 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;
        }
 
        memset(target, 0, sizeof(*target));
        target->DosDirNum = target->dirEntNum = ncp_reply_dword(server, 4);
        target->volNumber = volnum = ncp_reply_byte(server, 8);
        ncp_unlock_server(server);
 
        server->name_space[volnum] =
                ncp_get_known_namespace(server, volnum);
 
        DPRINTK("lookup_vol: namespace[%d] = %d\n",
                volnum, server->name_space[volnum]);
 
        target->nameLen = strlen(volname);
        strcpy(target->entryName, volname);
        target->attributes = aDIR;
        return 0;
}
 
int
ncp_modify_file_or_subdir_dos_info(struct ncp_server *server,
                                   struct nw_info_struct *file,
                                   __u32 info_mask,
                                   struct nw_modify_dos_info *info)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_byte(server, 7); /* subfunction */
        ncp_add_byte(server, server->name_space[file->volNumber]);
        ncp_add_byte(server, 0); /* reserved */
        ncp_add_word(server, 0x8006); /* search attribs: all */
 
        ncp_add_dword(server, info_mask);
        ncp_add_mem(server, info, sizeof(*info));
        ncp_add_handle_path(server, file->volNumber,
                            file->dirEntNum, 1, NULL);
 
        result = ncp_request(server, 87);
        ncp_unlock_server(server);
        return result;
}
 
static int
ncp_DeleteNSEntry(struct ncp_server *server,
                  __u8 have_dir_base, __u8 volume, __u32 dir_base,
                  char* name, __u8 ns, int attr)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_byte(server, 8); /* subfunction */
        ncp_add_byte(server, ns); /* namespace */
        ncp_add_byte(server, 0); /* reserved */
        ncp_add_word(server, attr); /* search attribs */
        ncp_add_handle_path(server, volume, dir_base, have_dir_base, name);
 
        result = ncp_request(server, 87);
        ncp_unlock_server(server);
        return result;
}
 
int
ncp_del_file_or_subdir(struct ncp_server *server,
                       struct nw_info_struct *dir, char *name)
{
#ifdef CONFIG_NCPFS_NFS_NS
        if (server->name_space[dir->volNumber]==NW_NS_NFS)
        {
                __u32 DOS_dir_base;
                int result;
 
                result=ncp_obtain_DOS_dir_base(server, dir, name, &DOS_dir_base);
                if (result) return result;
                return ncp_DeleteNSEntry(server, 1, dir->volNumber, DOS_dir_base, NULL, NW_NS_DOS, 0x8006);
        }
        else
#endif  /* CONFIG_NCPFS_NFS_NS */
                return ncp_DeleteNSEntry(server, 1, dir->volNumber, dir->dirEntNum, name, server->name_space[dir->volNumber], 0x8006);
}
 
static inline void
ConvertToNWfromDWORD ( __u32 sfd , __u8 ret[6] )
{
    __u16 *dest = (__u16 *) ret;
    memcpy(&(dest[1]), &sfd, 4);
    dest[0] = dest[1] + 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 nw_info_struct *dir, char *name,
                               int open_create_mode,
                               __u32 create_attributes,
                               int desired_acc_rights,
                               struct nw_file_info *target)
{
        int result;
        __u16 search_attribs = 0x0006;
        __u8 volume = (dir != NULL) ? dir->volNumber : target->i.volNumber;
 
        if ((create_attributes & aDIR) != 0)
        {
                search_attribs |= 0x8000;
        }
 
        ncp_init_request(server);
        ncp_add_byte(server, 1); /* subfunction */
        ncp_add_byte(server, server->name_space[volume]);
        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);
 
        if (dir != NULL)
        {
                ncp_add_handle_path(server, volume, dir->dirEntNum, 1, name);
        }
        else
        {
                ncp_add_handle_path(server, volume, target->i.dirEntNum,
                                    1, NULL);
        }
 
        if ((result = ncp_request(server, 87)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        target->opened = 1;
        target->server_file_handle = ncp_reply_dword(server, 0);
        target->open_create_action = ncp_reply_byte(server, 4);
 
        if (dir != NULL)
        {
                /* in target there's a new finfo to fill */
                ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i));
        }
 
        ConvertToNWfromDWORD(target->server_file_handle, target->file_handle);
 
        ncp_unlock_server(server);
        return 0;
}
 
 
int
ncp_initialize_search(struct ncp_server *server,
                      struct nw_info_struct *dir,
                      struct nw_search_sequence *target)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_byte(server, 2); /* subfunction */
        ncp_add_byte(server, server->name_space[dir->volNumber]);
        ncp_add_byte(server, 0); /* reserved */
        ncp_add_handle_path(server, dir->volNumber, dir->dirEntNum, 1, NULL);
 
        if ((result = ncp_request(server, 87)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        memcpy(target, ncp_reply_data(server, 0), sizeof(*target));
 
        ncp_unlock_server(server);
        return 0;
}
 
/* 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, 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);
        }
        else
#endif  /* CONFIG_NCPFS_NFS_NS */
        {
                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)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        memcpy(seq, ncp_reply_data(server, 0), sizeof(*seq));
        ncp_extract_file_info(ncp_reply_data(server, 10), target);
 
        ncp_unlock_server(server);
        return 0;
}
 
int
ncp_RenameNSEntry(struct ncp_server *server,
                  struct nw_info_struct *old_dir, char *old_name, int old_type,
                  struct nw_info_struct *new_dir, char *new_name)
{
        int result;
 
        if (   (old_dir == NULL) || (old_name == NULL)
            || (new_dir == NULL) || (new_name == NULL))
                return -EINVAL;
 
        ncp_init_request(server);
        ncp_add_byte(server, 4); /* subfunction */
        ncp_add_byte(server, server->name_space[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, old_dir->volNumber);
        ncp_add_dword(server, old_dir->dirEntNum);
        ncp_add_byte(server, 1);
        ncp_add_byte(server, 1); /* 1 source component */
 
        /* dest Handle Path */
        ncp_add_byte(server, new_dir->volNumber);
        ncp_add_dword(server, 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);
        return result;
}
 
int
ncp_ren_or_mov_file_or_subdir(struct ncp_server *server,
                              struct nw_info_struct *old_dir, char *old_name,
                              struct nw_info_struct *new_dir, char *new_name)
{
        int result;
        int old_type = 0x0006;
 
/* 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 = 0x0016;
                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(struct ncp_server *server, const char *file_id,
         __u32 offset, __u16 to_read,
         char *target, int *bytes_read)
{
        int result;
 
        ncp_init_request(server);
        ncp_add_byte(server, 0);
        ncp_add_mem(server, file_id, 6);
        ncp_add_dword(server, htonl(offset));
        ncp_add_word(server, htons(to_read));
 
        if ((result = ncp_request(server, 72)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        *bytes_read = ntohs(ncp_reply_word(server, 0));
 
        memcpy_tofs(target, ncp_reply_data(server, 2+(offset&1)), *bytes_read);
 
        ncp_unlock_server(server);
        return 0;
}
 
int
ncp_write(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_dword(server, htonl(offset));
        ncp_add_word(server, htons(to_write));
        ncp_add_mem_fromfs(server, source, to_write);
 
        if ((result = ncp_request(server, 73)) != 0)
        {
                ncp_unlock_server(server);
                return result;
        }
 
        *bytes_written = to_write;
 
        ncp_unlock_server(server);
        return 0;
}
 
#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_dword(server, htonl(offset));
        ncp_add_dword(server, htonl(length));
        ncp_add_word(server, htons(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_dword(server, htonl(offset));
        ncp_add_dword(server, htonl(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 */
 
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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [ncpfs/] [ncplib_kernel.c] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1628	jcastillo	`/*`
2			`* ncplib_kernel.c`
3			`*`
4			`* Copyright (C) 1995, 1996 by Volker Lendecke`
5			`*`
6			`*/`
7
8			`#include <linux/config.h>`
9
10			`#include "ncplib_kernel.h"`
11
12			`typedef __u8 byte;`
13			`typedef __u16 word;`
14			`typedef __u32 dword;`
15
16			`static inline int min(int a, int b)`
17			`{`
18			`return a<b ? a : b;`
19			`}`
20
21			`static void`
22			`assert_server_locked(struct ncp_server *server)`
23			`{`
24			`if (server->lock == 0)`
25			`{`
26			`DPRINTK("ncpfs: server not locked!\n");`
27			`}`
28			`}`
29
30			`static void`
31			`ncp_add_byte(struct ncp_server *server, byte x)`
32			`{`
33			`assert_server_locked(server);`
34			`(byte )(&(server->packet[server->current_size])) = x;`
35			`server->current_size += 1;`
36			`return;`
37			`}`
38
39			`static void`
40			`ncp_add_word(struct ncp_server *server, word x)`