trunk/rdesktop/disk.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Disk Redirection
   Copyright (C) Jeroen Meijer 2003

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#define FILE_ATTRIBUTE_READONLY                 0x00000001
#define FILE_ATTRIBUTE_HIDDEN                   0x00000002
#define FILE_ATTRIBUTE_SYSTEM                   0x00000004
#define FILE_ATTRIBUTE_DIRECTORY                0x00000010
#define FILE_ATTRIBUTE_ARCHIVE                  0x00000020
#define FILE_ATTRIBUTE_DEVICE                   0x00000040
#define FILE_ATTRIBUTE_UNKNOWNXXX0              0x00000060      /* ??? ACTION i.e. 0x860 == compress this file ? */
#define FILE_ATTRIBUTE_NORMAL                   0x00000080
#define FILE_ATTRIBUTE_TEMPORARY                0x00000100
#define FILE_ATTRIBUTE_SPARSE_FILE              0x00000200
#define FILE_ATTRIBUTE_REPARSE_POINT            0x00000400
#define FILE_ATTRIBUTE_COMPRESSED               0x00000800
#define FILE_ATTRIBUTE_OFFLINE                  0x00001000
#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED      0x00002000
#define FILE_ATTRIBUTE_ENCRYPTED                0x00004000

#define FILE_FLAG_OPEN_NO_RECALL                0x00100000
#define FILE_FLAG_OPEN_REPARSE_POINT            0x00200000
#define FILE_FLAG_POSIX_SEMANTICS               0x01000000
#define FILE_FLAG_BACKUP_SEMANTICS              0x02000000      /* sometimes used to create a directory */
#define FILE_FLAG_DELETE_ON_CLOSE               0x04000000
#define FILE_FLAG_SEQUENTIAL_SCAN               0x08000000
#define FILE_FLAG_RANDOM_ACCESS                 0x10000000
#define FILE_FLAG_NO_BUFFERING                  0x20000000
#define FILE_FLAG_OVERLAPPED                    0x40000000
#define FILE_FLAG_WRITE_THROUGH                 0x80000000

#define FILE_SHARE_READ                         0x01
#define FILE_SHARE_WRITE                        0x02
#define FILE_SHARE_DELETE                       0x04

#define FILE_BASIC_INFORMATION                  0x04
#define FILE_STANDARD_INFORMATION               0x05

#define FS_CASE_SENSITIVE                       0x00000001
#define FS_CASE_IS_PRESERVED                    0x00000002
#define FS_UNICODE_STORED_ON_DISK               0x00000004
#define FS_PERSISTENT_ACLS                      0x00000008
#define FS_FILE_COMPRESSION                     0x00000010
#define FS_VOLUME_QUOTAS                        0x00000020
#define FS_SUPPORTS_SPARSE_FILES                0x00000040
#define FS_SUPPORTS_REPARSE_POINTS              0x00000080
#define FS_SUPPORTS_REMOTE_STORAGE              0X00000100
#define FS_VOL_IS_COMPRESSED                    0x00008000
#define FILE_READ_ONLY_VOLUME                   0x00080000

#define OPEN_EXISTING                           1
#define CREATE_NEW                              2
#define OPEN_ALWAYS                             3
#define TRUNCATE_EXISTING                       4
#define CREATE_ALWAYS                           5

#define GENERIC_READ                            0x80000000
#define GENERIC_WRITE                           0x40000000
#define GENERIC_EXECUTE                         0x20000000
#define GENERIC_ALL                             0x10000000

#define ERROR_FILE_NOT_FOUND                    2L
#define ERROR_ALREADY_EXISTS                    183L

#define MAX_OPEN_FILES  0x100

#if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#define SOLARIS
#endif

#if (defined(SOLARIS) || defined(__hpux))
#define DIRFD(a) ((a)->dd_fd)
#else
#define DIRFD(a) (dirfd(a))
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>              /* open, close */
#include <dirent.h>             /* opendir, closedir, readdir */
#include <fnmatch.h>
#include <errno.h>              /* errno */

#include <utime.h>
#include <time.h>               /* ctime */


#if (defined(SOLARIS) || defined (__hpux) || defined(__BEOS__))
#include <sys/statvfs.h>        /* solaris statvfs */
#define STATFS_FN(path, buf) (statvfs(path,buf))
#define STATFS_T statvfs
#define F_NAMELEN(buf) ((buf).f_namemax)

#elif (defined(__OpenBSD__) || defined(__NetBSD__) || defined(__FreeBSD__))
#include <sys/param.h>
#include <sys/mount.h>
#define STATFS_FN(path, buf) (statfs(path,buf))
#define STATFS_T statfs
#define F_NAMELEN(buf) (NAME_MAX)

#else
#include <sys/vfs.h>            /* linux statfs */
#define STATFS_FN(path, buf) (statfs(path,buf))
#define STATFS_T statfs
#define F_NAMELEN(buf) ((buf).f_namelen)
#endif

#include "rdesktop.h"

extern RDPDR_DEVICE g_rdpdr_device[];

struct fileinfo
{
        uint32 device_id, flags_and_attributes;
        char path[256];
        DIR *pdir;
        struct dirent *pdirent;
        char pattern[64];
        BOOL delete_on_close;
}
g_fileinfo[MAX_OPEN_FILES];

time_t
get_create_time(struct stat *st)
{
        time_t ret, ret1;

        ret = MIN(st->st_ctime, st->st_mtime);
        ret1 = MIN(ret, st->st_atime);

        if (ret1 != (time_t) 0)
                return ret1;

        return ret;
}

/* Convert seconds since 1970 to a filetime */
void
seconds_since_1970_to_filetime(time_t seconds, uint32 * high, uint32 * low)
{
        unsigned long long ticks;

        ticks = (seconds + 11644473600LL) * 10000000;
        *low = (uint32) ticks;
        *high = (uint32) (ticks >> 32);
}

/* Convert seconds since 1970 back to filetime */
time_t
convert_1970_to_filetime(uint32 high, uint32 low)
{
        unsigned long long ticks;
        time_t val;

        ticks = low + (((unsigned long long) high) << 32);
        ticks /= 10000000;
        ticks -= 11644473600LL;

        val = (time_t) ticks;
        return (val);

}


/* Enumeration of devices from rdesktop.c        */
/* returns numer of units found and initialized. */
/* optarg looks like ':h=/mnt/floppy,b=/mnt/usbdevice1' */
/* when it arrives to this function.             */
int
disk_enum_devices(uint32 * id, char *optarg)
{
        char *pos = optarg;
        char *pos2;
        int count = 0;

        // skip the first colon
        optarg++;
        while ((pos = next_arg(optarg, ',')) && *id < RDPDR_MAX_DEVICES)
        {
                pos2 = next_arg(optarg, '=');
                strcpy(g_rdpdr_device[*id].name, optarg);

                toupper_str(g_rdpdr_device[*id].name);

                /* add trailing colon to name. */
                strcat(g_rdpdr_device[*id].name, ":");

                g_rdpdr_device[*id].local_path = xmalloc(strlen(pos2) + 1);
                strcpy(g_rdpdr_device[*id].local_path, pos2);
                printf("DISK %s to %s\n", g_rdpdr_device[*id].name, g_rdpdr_device[*id].local_path);
                g_rdpdr_device[*id].device_type = DEVICE_TYPE_DISK;
                count++;
                (*id)++;

                optarg = pos;
        }
        return count;
}

/* Opens or creates a file or directory */
NTSTATUS
disk_create(uint32 device_id, uint32 accessmask, uint32 sharemode, uint32 create_disposition,
            uint32 flags_and_attributes, char *filename, HANDLE * phandle)
{
        HANDLE handle;
        DIR *dirp;
        int flags, mode;
        char path[256];
        struct stat filestat;

        handle = 0;
        dirp = NULL;
        flags = 0;
        mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;


        if (filename[strlen(filename) - 1] == '/')
                filename[strlen(filename) - 1] = 0;
        sprintf(path, "%s%s", g_rdpdr_device[device_id].local_path, filename);

        switch (create_disposition)
        {
                case CREATE_ALWAYS:

                        // Delete existing file/link.
                        unlink(path);
                        flags |= O_CREAT;
                        break;

                case CREATE_NEW:

                        // If the file already exists, then fail.
                        flags |= O_CREAT | O_EXCL;
                        break;

                case OPEN_ALWAYS:

                        // Create if not already exists.
                        flags |= O_CREAT;
                        break;

                case OPEN_EXISTING:

                        // Default behaviour
                        break;

                case TRUNCATE_EXISTING:

                        // If the file does not exist, then fail.
                        flags |= O_TRUNC;
                        break;
        }

        //printf("Open: \"%s\"  flags: %u, accessmask: %u sharemode: %u create disp: %u\n", path, flags_and_attributes, accessmask, sharemode, create_disposition);

        // Get information about file and set that flag ourselfs
        if ((stat(path, &filestat) == 0) && (S_ISDIR(filestat.st_mode)))
        {
                if (flags_and_attributes & FILE_NON_DIRECTORY_FILE)
                        return STATUS_FILE_IS_A_DIRECTORY;
                else
                        flags_and_attributes |= FILE_DIRECTORY_FILE;
        }

        if (flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                if (flags & O_CREAT)
                {
                        mkdir(path, mode);
                }

                dirp = opendir(path);
                if (!dirp)
                {
                        switch (errno)
                        {
                                case EACCES:

                                        return STATUS_ACCESS_DENIED;

                                case ENOENT:

                                        return STATUS_NO_SUCH_FILE;

                                default:

                                        perror("opendir");
                                        return STATUS_NO_SUCH_FILE;
                        }
                }
                handle = DIRFD(dirp);
        }
        else
        {

                if (accessmask & GENERIC_ALL
                    || (accessmask & GENERIC_READ && accessmask & GENERIC_WRITE))
                {
                        flags |= O_RDWR;
                }
                else if ((accessmask & GENERIC_WRITE) && !(accessmask & GENERIC_READ))
                {
                        flags |= O_WRONLY;
                }
                else
                {
                        flags |= O_RDONLY;
                }

                handle = open(path, flags, mode);
                if (handle == -1)
                {
                        switch (errno)
                        {
                                case EISDIR:

                                        return STATUS_FILE_IS_A_DIRECTORY;

                                case EACCES:

                                        return STATUS_ACCESS_DENIED;

                                case ENOENT:

                                        return STATUS_NO_SUCH_FILE;
                                case EEXIST:

                                        return STATUS_OBJECT_NAME_COLLISION;
                                default:

                                        perror("open");
                                        return STATUS_NO_SUCH_FILE;
                        }
                }

                /* all read and writes of files should be non blocking */
                if (fcntl(handle, F_SETFL, O_NONBLOCK) == -1)
                        perror("fcntl");
        }

        if (handle >= MAX_OPEN_FILES)
        {
                error("Maximum number of open files (%s) reached. Increase MAX_OPEN_FILES!\n",
                      handle);
                exit(1);
        }

        if (dirp)
                g_fileinfo[handle].pdir = dirp;
        g_fileinfo[handle].device_id = device_id;
        g_fileinfo[handle].flags_and_attributes = flags_and_attributes;
        strncpy(g_fileinfo[handle].path, path, 255);

        *phandle = handle;
        return STATUS_SUCCESS;
}

NTSTATUS
disk_close(HANDLE handle)
{
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);

        if (pfinfo->flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                closedir(pfinfo->pdir);
                //FIXME: Should check exit code
        }
        else
        {
                close(handle);
        }

        return STATUS_SUCCESS;
}

NTSTATUS
disk_read(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        int n;

#if 0
        /* browsing dir ????        */
        /* each request is 24 bytes */
        if (g_fileinfo[handle].flags_and_attributes & FILE_DIRECTORY_FILE)
        {
                *result = 0;
                return STATUS_SUCCESS;
        }
#endif

        if (offset)
                lseek(handle, offset, SEEK_SET);
        n = read(handle, data, length);

        if (n < 0)
        {
                *result = 0;
                switch (errno)
                {
                        case EISDIR:
                                return STATUS_FILE_IS_A_DIRECTORY;
                        default:
                                perror("read");
                                return STATUS_INVALID_PARAMETER;
                }
        }

        *result = n;

        return STATUS_SUCCESS;
}

NTSTATUS
disk_write(HANDLE handle, uint8 * data, uint32 length, uint32 offset, uint32 * result)
{
        int n;

        if (offset)
                lseek(handle, offset, SEEK_SET);

        n = write(handle, data, length);

        if (n < 0)
        {
                perror("write");
                *result = 0;
                switch (errno)
                {
                        case ENOSPC:
                                return STATUS_DISK_FULL;
                        default:
                                return STATUS_ACCESS_DENIED;
                }
        }

        *result = n;

        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_information(HANDLE handle, uint32 info_class, STREAM out)
{
        uint32 file_attributes, ft_high, ft_low;
        struct stat filestat;
        char *path, *filename;

        path = g_fileinfo[handle].path;

        // Get information about file
        if (fstat(handle, &filestat) != 0)
        {
                perror("stat");
                out_uint8(out, 0);
                return STATUS_ACCESS_DENIED;
        }

        // Set file attributes
        file_attributes = 0;
        if (S_ISDIR(filestat.st_mode))
                file_attributes |= FILE_ATTRIBUTE_DIRECTORY;

        filename = 1 + strrchr(path, '/');
        if (filename && filename[0] == '.')
                file_attributes |= FILE_ATTRIBUTE_HIDDEN;

        if (!file_attributes)
                file_attributes |= FILE_ATTRIBUTE_NORMAL;

        if (!(filestat.st_mode & S_IWUSR))
                file_attributes |= FILE_ATTRIBUTE_READONLY;

        // Return requested data
        switch (info_class)
        {
                case 4: /* FileBasicInformation */
                        seconds_since_1970_to_filetime(get_create_time(&filestat), &ft_high,
                                                       &ft_low);
                        out_uint32_le(out, ft_low);     //create_access_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(filestat.st_atime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_access_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(filestat.st_mtime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_write_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(filestat.st_ctime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_change_time
                        out_uint32_le(out, ft_high);

                        out_uint32_le(out, file_attributes);
                        break;

                case 5: /* FileStandardInformation */

                        out_uint32_le(out, filestat.st_size);   //Allocation size
                        out_uint32_le(out, 0);
                        out_uint32_le(out, filestat.st_size);   //End of file
                        out_uint32_le(out, 0);
                        out_uint32_le(out, filestat.st_nlink);  //Number of links
                        out_uint8(out, 0);      //Delete pending
                        out_uint8(out, S_ISDIR(filestat.st_mode) ? 1 : 0);      //Directory
                        break;

                case 35:        /* FileObjectIdInformation */

                        out_uint32_le(out, file_attributes);    /* File Attributes */
                        out_uint32_le(out, 0);  /* Reparse Tag */
                        break;

                default:

                        unimpl("IRP Query (File) Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_set_information(HANDLE handle, uint32 info_class, STREAM in, STREAM out)
{
        uint32 device_id, length, file_attributes, ft_high, ft_low;
        char newname[256], fullpath[256];
        struct fileinfo *pfinfo;

        int mode;
        struct stat filestat;
        time_t write_time, change_time, access_time, mod_time;
        struct utimbuf tvs;
        struct STATFS_T stat_fs;

        pfinfo = &(g_fileinfo[handle]);

        switch (info_class)
        {
                case 4: /* FileBasicInformation */
                        write_time = change_time = access_time = 0;

                        in_uint8s(in, 4);       /* Handle of root dir? */
                        in_uint8s(in, 24);      /* unknown */

                        // CreationTime
                        in_uint32_le(in, ft_low);
                        in_uint32_le(in, ft_high);

                        // AccessTime
                        in_uint32_le(in, ft_low);
                        in_uint32_le(in, ft_high);
                        if (ft_low || ft_high)
                                access_time = convert_1970_to_filetime(ft_high, ft_low);

                        // WriteTime
                        in_uint32_le(in, ft_low);
                        in_uint32_le(in, ft_high);
                        if (ft_low || ft_high)
                                write_time = convert_1970_to_filetime(ft_high, ft_low);

                        // ChangeTime
                        in_uint32_le(in, ft_low);
                        in_uint32_le(in, ft_high);
                        if (ft_low || ft_high)
                                change_time = convert_1970_to_filetime(ft_high, ft_low);

                        in_uint32_le(in, file_attributes);

                        if (fstat(handle, &filestat))
                                return STATUS_ACCESS_DENIED;

                        tvs.modtime = filestat.st_mtime;
                        tvs.actime = filestat.st_atime;
                        if (access_time)
                                tvs.actime = access_time;


                        if (write_time || change_time)
                                mod_time = MIN(write_time, change_time);
                        else
                                mod_time = write_time ? write_time : change_time;

                        if (mod_time)
                                tvs.modtime = mod_time;


                        if (access_time || write_time || change_time)
                        {
#if WITH_DEBUG_RDP5
                                printf("FileBasicInformation access       time %s",
                                       ctime(&tvs.actime));
                                printf("FileBasicInformation modification time %s",
                                       ctime(&tvs.modtime));
#endif
                                if (utime(pfinfo->path, &tvs))
                                        return STATUS_ACCESS_DENIED;
                        }

                        if (!file_attributes)
                                break;  // not valid

                        mode = filestat.st_mode;

                        if (file_attributes & FILE_ATTRIBUTE_READONLY)
                                mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
                        else
                                mode |= S_IWUSR;

                        mode &= 0777;
#if WITH_DEBUG_RDP5
                        printf("FileBasicInformation set access mode 0%o", mode);
#endif

                        if (fchmod(handle, mode))
                                return STATUS_ACCESS_DENIED;

                        /* prevents start of writing if not enough space left on device */
                        if (STATFS_FN(g_rdpdr_device[pfinfo->device_id].local_path, &stat_fs) == 0)
                                if (stat_fs.f_bsize * stat_fs.f_bfree < length)
                                        return STATUS_DISK_FULL;

                        break;

                case 10:        /* FileRenameInformation */

                        in_uint8s(in, 4);       /* Handle of root dir? */
                        in_uint8s(in, 0x1a);    /* unknown */
                        in_uint32_le(in, length);

                        if (length && (length / 2) < 256)
                        {
                                rdp_in_unistr(in, newname, length);
                                convert_to_unix_filename(newname);
                        }
                        else
                        {
                                return STATUS_INVALID_PARAMETER;
                        }

                        sprintf(fullpath, "%s%s", g_rdpdr_device[pfinfo->device_id].local_path,
                                newname);

                        if (rename(pfinfo->path, fullpath) != 0)
                        {
                                perror("rename");
                                return STATUS_ACCESS_DENIED;
                        }
                        break;

                case 13:        /* FileDispositionInformation */

                        //unimpl("IRP Set File Information class: FileDispositionInformation\n");

                        //in_uint32_le(in, delete_on_close);
                        // disk_close(handle);
                        if ((pfinfo->flags_and_attributes & FILE_DIRECTORY_FILE))       // remove a directory
                        {
                                if (rmdir(pfinfo->path) < 0)
                                        return STATUS_ACCESS_DENIED;
                        }
                        else if (unlink(pfinfo->path) < 0)      // unlink a file
                                return STATUS_ACCESS_DENIED;

                        break;

                case 19:        /* FileAllocationInformation */

                        unimpl("IRP Set File Information class: FileAllocationInformation\n");
                        break;

                case 20:        /* FileEndOfFileInformation */
                        in_uint8s(in, 28);      /* unknown */
                        in_uint32_le(in, length);       /* file size */

                        printf("FileEndOfFileInformation length = %d\n", length);
                        // ????????????

                        unimpl("IRP Set File Information class: FileEndOfFileInformation\n");
                        break;
                default:

                        unimpl("IRP Set File Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_volume_information(HANDLE handle, uint32 info_class, STREAM out)
{
        char *volume, *fs_type;
        struct STATFS_T stat_fs;
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);
        volume = "RDESKTOP";
        fs_type = "RDPFS";

        if (STATFS_FN(pfinfo->path, &stat_fs) != 0)
        {
                perror("statfs");
                return STATUS_ACCESS_DENIED;
        }

        switch (info_class)
        {
                case 1: /* FileFsVolumeInformation */

                        out_uint32_le(out, 0);  /* volume creation time low */
                        out_uint32_le(out, 0);  /* volume creation time high */
                        out_uint32_le(out, 0);  /* serial */
                        out_uint32_le(out, 2 * strlen(volume)); /* length of string */
                        out_uint8(out, 0);      /* support objects? */
                        rdp_out_unistr(out, volume, 2 * strlen(volume) - 2);
                        break;

                case 3: /* FileFsSizeInformation */

                        out_uint32_le(out, stat_fs.f_blocks);   /* Total allocation units low */
                        out_uint32_le(out, 0);  /* Total allocation high units */
                        out_uint32_le(out, stat_fs.f_bfree);    /* Available allocation units */
                        out_uint32_le(out, 0);  /* Available allowcation units */
                        out_uint32_le(out, stat_fs.f_bsize / 0x200);    /* Sectors per allocation unit */
                        out_uint32_le(out, 0x200);      /* Bytes per sector */
                        break;

                case 5: /* FileFsAttributeInformation */

                        out_uint32_le(out, FS_CASE_SENSITIVE | FS_CASE_IS_PRESERVED);   /* fs attributes */
                        out_uint32_le(out, F_NAMELEN(stat_fs)); /* max length of filename */
                        out_uint32_le(out, 2 * strlen(fs_type));        /* length of fs_type */
                        rdp_out_unistr(out, fs_type, 2 * strlen(fs_type) - 2);
                        break;

                case 2: /* FileFsLabelInformation */
                case 4: /* FileFsDeviceInformation */
                case 6: /* FileFsControlInformation */
                case 7: /* FileFsFullSizeInformation */
                case 8: /* FileFsObjectIdInformation */
                case 9: /* FileFsMaximumInformation */
                default:

                        unimpl("IRP Query Volume Information class: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }
        return STATUS_SUCCESS;
}

NTSTATUS
disk_query_directory(HANDLE handle, uint32 info_class, char *pattern, STREAM out)
{
        uint32 file_attributes, ft_low, ft_high;
        char *dirname, fullpath[256];
        DIR *pdir;
        struct dirent *pdirent;
        struct stat fstat;
        struct fileinfo *pfinfo;

        pfinfo = &(g_fileinfo[handle]);
        pdir = pfinfo->pdir;
        dirname = pfinfo->path;
        file_attributes = 0;

        switch (info_class)
        {
                case 3: //FIXME: Why 3?

                        // If a search pattern is received, remember this pattern, and restart search
                        if (pattern[0] != 0)
                        {
                                strncpy(pfinfo->pattern, 1 + strrchr(pattern, '/'), 64);
                                rewinddir(pdir);
                        }

                        // find next dirent matching pattern
                        pdirent = readdir(pdir);
                        while (pdirent && fnmatch(pfinfo->pattern, pdirent->d_name, 0) != 0)
                                pdirent = readdir(pdir);

                        if (pdirent == NULL)
                                return STATUS_NO_MORE_FILES;

                        // Get information for directory entry
                        sprintf(fullpath, "%s/%s", dirname, pdirent->d_name);

                        /* JIF
                           printf("Stat: %s\n", fullpath); */
                        if (stat(fullpath, &fstat))
                        {
                                perror("stat");
                                out_uint8(out, 0);
                                return STATUS_ACCESS_DENIED;
                        }

                        if (S_ISDIR(fstat.st_mode))
                                file_attributes |= FILE_ATTRIBUTE_DIRECTORY;
                        if (pdirent->d_name[0] == '.')
                                file_attributes |= FILE_ATTRIBUTE_HIDDEN;
                        if (!file_attributes)
                                file_attributes |= FILE_ATTRIBUTE_NORMAL;
                        if (!(fstat.st_mode & S_IWUSR))
                                file_attributes |= FILE_ATTRIBUTE_READONLY;

                        // Return requested information
                        out_uint8s(out, 8);     //unknown zero

                        seconds_since_1970_to_filetime(get_create_time(&fstat), &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     // create time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(fstat.st_atime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_access_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(fstat.st_mtime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //last_write_time
                        out_uint32_le(out, ft_high);

                        seconds_since_1970_to_filetime(fstat.st_ctime, &ft_high, &ft_low);
                        out_uint32_le(out, ft_low);     //change_write_time
                        out_uint32_le(out, ft_high);

                        out_uint32_le(out, fstat.st_size);      //filesize low
                        out_uint32_le(out, 0);  //filesize high
                        out_uint32_le(out, fstat.st_size);      //filesize low
                        out_uint32_le(out, 0);  //filesize high
                        out_uint32_le(out, file_attributes);
                        out_uint8(out, 2 * strlen(pdirent->d_name) + 2);        //unicode length
                        out_uint8s(out, 7);     //pad?
                        out_uint8(out, 0);      //8.3 file length
                        out_uint8s(out, 2 * 12);        //8.3 unicode length
                        rdp_out_unistr(out, pdirent->d_name, 2 * strlen(pdirent->d_name));
                        break;

                default:

                        unimpl("IRP Query Directory sub: 0x%x\n", info_class);
                        return STATUS_INVALID_PARAMETER;
        }

        return STATUS_SUCCESS;
}


static NTSTATUS
disk_device_control(HANDLE handle, uint32 request, STREAM in, STREAM out)
{
        uint32 result;

        if (((request >> 16) != 20) || ((request >> 16) != 9))
                return STATUS_INVALID_PARAMETER;

        /* extract operation */
        request >>= 2;
        request &= 0xfff;

        printf("DISK IOCTL %d\n", request);

        switch (request)
        {
                case 25:        // ?
                case 42:        // ?
                default:
                        unimpl("DISK IOCTL %d\n", request);
                        return STATUS_INVALID_PARAMETER;
        }

        return STATUS_SUCCESS;
}

DEVICE_FNS disk_fns = {
        disk_create,
        disk_close,
        disk_read,
        disk_write,
        disk_device_control     /* device_control */
};