phatvol.h

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00001 #ifndef FS_PHATVOL_H_
00002 #define FS_PHATVOL_H_
00003 
00004 /*
00005  * Copyright (C) 2005 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. Neither the name of the copyright holders nor the names of
00017  *    contributors may be used to endorse or promote products derived
00018  *    from this software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00021  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00024  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00027  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00028  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00030  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00031  * SUCH DAMAGE.
00032  *
00033  * For additional information see http://www.ethernut.de/
00034  */
00035 
00062 #include <cfg/fs.h>
00063 
00064 #include <sys/types.h>
00065 #include <sys/file.h>
00066 #include <sys/device.h>
00067 
00072 
00076 typedef struct __attribute__ ((packed)) _PHATVBR {
00078     u_char boot_jump[3];
00080     u_char boot_oem[8];
00085     u_short bios_sectsz;
00087     u_char bios_clustsz;
00093     u_short bios_rsvd_sects;
00095     u_char bios_ntabs;
00097     u_short bios_rootsz;
00099     u_short bios_volsz;
00101     u_char bios_media;
00106     u_short bios_tabsz;
00108     u_short bios_sects_p_trk;
00110     u_short bios_heads;
00115     u_long bios_sects_hidd;
00120     u_long bios_volsz_big;
00121 
00126     u_long bios_tabsz_big;
00133     u_short bios_xflags;
00135     u_short bios_fsver;
00137     u_long bios_root_clust;
00139     u_short bios_fsinfo;
00141     u_short bios_boot_bak;
00146     u_char bios_rsvd32[12];
00147 
00153     u_char boot_drive;
00155     u_char boot_rsvd_nt;
00160     u_char boot_xsig;
00162     u_long boot_vol_id;
00164     u_char boot_vol_lbl[11];
00166     u_char boot_vol_fs[8];
00167 } PHATVBR;
00168 
00172 typedef struct _PHATSECTBUF {
00174     u_char *sect_data;
00176     u_long sect_num;
00178     int sect_dirty;
00179 } PHATSECTBUF;
00180 
00184 typedef struct _PHATVOL {
00189     int vol_type;
00191     u_long vol_numfree;
00193     u_long vol_nxtfree;
00195 #if PHAT_SECTOR_BUFFERS
00196     PHATSECTBUF vol_buf[PHAT_SECTOR_BUFFERS];
00198     int vol_usenext;
00199 #else
00200     PHATSECTBUF vol_buf[1];
00201 #endif
00202 
00203     HANDLE vol_fsmutex;
00205     HANDLE vol_iomutex;
00207     u_int vol_sectsz;
00209     u_int vol_clustsz;
00210 
00212     u_long vol_tabsz;
00217     u_long vol_tab_sect[2];
00218 
00220     u_int vol_rootsz;
00222     u_long vol_root_sect;
00224     u_long vol_root_clust;
00225 
00231     u_long vol_last_clust;
00236     u_long vol_data_sect;
00237 } PHATVOL;
00238 
00241 __BEGIN_DECLS
00242 /* Prototypes */
00243 extern int PhatVolMount(NUTDEVICE * dev, NUTFILE * blkmnt, u_char part_type);
00244 extern int PhatVolUnmount(NUTDEVICE * dev);
00245 extern u_long PhatClusterSector(NUTFILE * nfp, u_long clust);
00246 
00247 __END_DECLS
00248 /* End of prototypes */
00249 #endif

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