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More FAT long file name logic 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3782 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2011-07-13 21:53:06 +00:00
parent 99c81ca8bb
commit 7da2d52f9b
4 changed files with 801 additions and 181 deletions
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18
nuttx/fs/fat/fs_fat32.h
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@ -217,7 +217,7 @@
# define LDIR_MAXLFNCHARS 13 /* Max unicode characters in one LFN entry */
# define LDIR_MAXLFNS 20 /* Max number of LFN entries */
/* LFN directory enty offsets */
/* LFN directory entry offsets */
# define LDIR_SEQ 0 /* 1@ 0: Sequence number */
# define LDIR_WCHAR1_5 1 /* 10@ 1: File name characters 1-5 (5 Unicode characters) */
@ -235,6 +235,10 @@
# define LDIR0_E5 DIR0_E5 /* The actual value is 0xe5 */
# define LDIR0_LAST 0x40 /* Last LFN in file name (appears first) */
# define LDIR0_SEQ_MASK 0x1f /* Mask for sequence number (1-20) */
/* The LFN entry attribute */
# define LDDIR_LFNATTR 0x0f
#endif
/****************************************************************************
@ -333,10 +337,10 @@
#define DIR_GETCRTTIMETENTH(p) UBYTE_VAL(p,DIR_CRTTIMETENTH)
#ifdef CONFIG_FAT_LFN
# define LDIR_GETSEQ(p) UBYTE_VAL(*p, LDIR_SEQ);
# define LDIR_GETATTRIBUTES(p) UBYTE_VAL(*p, LDIR_ATTRIBUTES);
# define LDIR_GETNTRES(p) UBYTE_VAL(*p, LDIR_NTRES);
# define LDIR_GETCHECKSUM(p) UBYTE_VAL(*p, LDIR_CHECKSUM);
# define LDIR_GETSEQ(p) UBYTE_VAL(*p,LDIR_SEQ);
# define LDIR_GETATTRIBUTES(p) UBYTE_VAL(*p,LDIR_ATTRIBUTES);
# define LDIR_GETNTRES(p) UBYTE_VAL(*p,LDIR_NTRES);
# define LDIR_GETCHECKSUM(p) UBYTE_VAL(*p,LDIR_CHECKSUM);
#endif
#define MBR_PUTSECPERCLUS(p,v) UBYTE_PUT(p,BS_SECPERCLUS,v)
@ -717,11 +721,13 @@ struct fat_dirseq_s
uint16_t ds_lfnoffset; /* Sector offset to last long file name entry */
#endif
/* Sector numbers */
/* Sector and cluster numbers */
off_t ds_sector; /* Sector of the short file name entry */
#ifdef CONFIG_FAT_LFN
off_t ds_cluster; /* Cluster containing the short file name entry */
off_t ds_lfnsector; /* Sector of the last long name entry */
off_t ds_lfncluster; /* Cluster containing the long file name entry */
#endif
};

945
nuttx/fs/fat/fs_fat32dirent.c
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File diff suppressed because it is too large Load Diff

9
nuttx/fs/fat/fs_fat32util.c
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@ -1181,7 +1181,9 @@ int32_t fat_extendchain(struct fat_mountpt_s *fs, uint32_t cluster)
* Name: fat_nextdirentry
*
* Desciption: Read the next directory entry from the sector in cache,
* reading the next sector(s) in the cluster as necessary.
* reading the next sector(s) in the cluster as necessary. This function
* must return -ENOSPC if if fails because there are no further entries
* available in the directory.
*
****************************************************************************/
@ -1221,7 +1223,7 @@ int fat_nextdirentry(struct fat_mountpt_s *fs, struct fs_fatdir_s *dir)
* the root directory.
*/
return ERROR;
return -ENOSPC;
}
}
else
@ -1250,7 +1252,8 @@ int fat_nextdirentry(struct fat_mountpt_s *fs, struct fs_fatdir_s *dir)
if (cluster < 2 || cluster >= fs->fs_nclusters)
{
/* No, we have probably reached the end of the cluster list */
return ERROR;
return -ENOSPC;
}
/* Initialize for new cluster */

10
nuttx/include/nuttx/dirent.h
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@ -78,9 +78,9 @@ struct fs_psuedodir_s
struct fs_fatdir_s
{
uint32_t fd_startcluster; /* Start cluster number of the directory */
uint32_t fd_currcluster; /* Current cluster number being read */
size_t fd_currsector; /* Current sector being read */
off_t fd_startcluster; /* Start cluster number of the directory */
off_t fd_currcluster; /* Current cluster number being read */
off_t fd_currsector; /* Current sector being read */
unsigned int fd_index; /* Current index of the directory entry to read */
};
#endif /* CONFIG_FS_FAT */
@ -92,8 +92,8 @@ struct fs_fatdir_s
struct fs_romfsdir_s
{
uint32_t fr_firstoffset; /* Offset to the first entry in the directory */
uint32_t fr_curroffset; /* Current offset into the directory contents */
off_t fr_firstoffset; /* Offset to the first entry in the directory */
off_t fr_curroffset; /* Current offset into the directory contents */
};
#endif /* CONFIG_FS_ROMFS */