kopia lustrzana https://github.com/micropython/micropython
lib/fatfs: Support our volume names; make some funcs static.
Damien George
rodzic
c546b66bab
commit
6b755d827a
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@ -119,6 +119,8 @@
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/ Fixed null pointer dereference on attempting to delete the root direcotry.
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/---------------------------------------------------------------------------*/
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#include <string.h>
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#include "ff.h" /* Declarations of FatFs API */
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#include "diskio.h" /* Declarations of disk I/O functions */
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@ -506,7 +508,8 @@ static FATFS *FatFs[_VOLUMES]; /* Pointer to the file system objects (logical dr
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static WORD Fsid; /* File system mount ID */
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#if _FS_RPATH && _VOLUMES >= 2
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static BYTE CurrVol; /* Current drive */
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// dpgeorge: changed name and made non-static
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BYTE ff_CurrVol; /* Current drive */
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#endif
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#if _FS_LOCK
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@ -559,6 +562,12 @@ static const BYTE ExCvt[] = _EXCVT; /* Upper conversion table for extended chara
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/* String functions */
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/*-----------------------------------------------------------------------*/
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// dpgeorge:
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// We use stdlib version of memset and memcmp to reduce code size.
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// We use the original custom version of mem_cpy so that gcc doesn't
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// recognise the builtin function and then inline it. Allowing gcc
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// to use the builtin memcpy increases code size by 72 bytes.
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/* Copy memory to memory */
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static
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void mem_cpy (void* dst, const void* src, UINT cnt) {
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@ -577,6 +586,7 @@ void mem_cpy (void* dst, const void* src, UINT cnt) {
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}
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/* Fill memory */
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#if 0
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static
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void mem_set (void* dst, int val, UINT cnt) {
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BYTE *d = (BYTE*)dst;
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@ -584,8 +594,13 @@ void mem_set (void* dst, int val, UINT cnt) {
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while (cnt--)
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*d++ = (BYTE)val;
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}
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#else
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// use stdlib
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#define mem_set memset
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#endif
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/* Compare memory to memory */
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#if 0
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static
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int mem_cmp (const void* dst, const void* src, UINT cnt) {
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const BYTE *d = (const BYTE *)dst, *s = (const BYTE *)src;
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@ -594,6 +609,10 @@ int mem_cmp (const void* dst, const void* src, UINT cnt) {
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while (cnt-- && (r = *d++ - *s++) == 0) ;
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return r;
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}
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#else
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// use stdlib
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#define mem_cmp memcmp
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#endif
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/* Check if chr is contained in the string */
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static
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@ -854,6 +873,8 @@ FRESULT sync_fs ( /* FR_OK: successful, FR_DISK_ERR: failed */
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/*-----------------------------------------------------------------------*/
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/* Hidden API for hacks and disk tools */
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// dpgeorge: made static
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static
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DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
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FATFS* fs, /* File system object */
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DWORD clst /* Cluster# to be converted */
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@ -872,6 +893,8 @@ DWORD clust2sect ( /* !=0: Sector number, 0: Failed - invalid cluster# */
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/*-----------------------------------------------------------------------*/
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/* Hidden API for hacks and disk tools */
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// dpgeorge: made static
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static
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DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluster status */
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FATFS* fs, /* File system object */
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DWORD clst /* FAT item index (cluster#) to get the value */
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@ -927,6 +950,8 @@ DWORD get_fat ( /* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x0FFFFFFF:Cluste
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/* Hidden API for hacks and disk tools */
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#if !_FS_READONLY
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// dpgeorge: made static
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static
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FRESULT put_fat (
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FATFS* fs, /* File system object */
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DWORD clst, /* FAT item index (cluster#) to be set */
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@ -2093,6 +2118,8 @@ FRESULT follow_path ( /* FR_OK(0): successful, !=0: error code */
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/* Get logical drive number from path name */
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/*-----------------------------------------------------------------------*/
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// dpgeorge: replaced with custom ff_get_ldnumber
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#if 0
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static
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int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
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const TCHAR** path /* Pointer to pointer to the path name */
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@ -2144,6 +2171,7 @@ int get_ldnumber ( /* Returns logical drive number (-1:invalid drive) */
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}
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return vol;
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}
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#endif
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@ -2197,7 +2225,7 @@ FRESULT find_volume ( /* FR_OK(0): successful, !=0: any error occurred */
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/* Get logical drive number from the path name */
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*rfs = 0;
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vol = get_ldnumber(path);
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vol = ff_get_ldnumber(path);
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if (vol < 0) return FR_INVALID_DRIVE;
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/* Check if the file system object is valid or not */
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@ -2397,7 +2425,7 @@ FRESULT f_mount (
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const TCHAR *rp = path;
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vol = get_ldnumber(&rp);
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vol = ff_get_ldnumber(&rp);
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if (vol < 0) return FR_INVALID_DRIVE;
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cfs = FatFs[vol]; /* Pointer to fs object */
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@ -2885,10 +2913,10 @@ FRESULT f_chdrive (
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int vol;
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vol = get_ldnumber(&path);
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vol = ff_get_ldnumber(&path);
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if (vol < 0) return FR_INVALID_DRIVE;
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CurrVol = (BYTE)vol;
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ff_CurrVol = (BYTE)vol;
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return FR_OK;
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}
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@ -2984,11 +3012,19 @@ FRESULT f_getcwd (
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tp = buff;
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if (res == FR_OK) {
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#if _VOLUMES >= 2
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// dpgeorge: change to use our volume names
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#if 0
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*tp++ = '0' + CurrVol; /* Put drive number */
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*tp++ = ':';
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#else
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ff_get_volname(ff_CurrVol, &tp);
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#endif
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#endif
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if (i == len) { /* Root-directory */
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// dpgeorge: not needed with volume names
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#if 0
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*tp++ = '/';
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#endif
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} else { /* Sub-directroy */
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do /* Add stacked path str */
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*tp++ = buff[i++];
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@ -3671,7 +3707,7 @@ FRESULT f_rename (
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} else {
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mem_cpy(buf, djo.dir+DIR_Attr, 21); /* Save the object information except name */
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mem_cpy(&djn, &djo, sizeof (DIR)); /* Duplicate the directory object */
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if (get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
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if (ff_get_ldnumber(&path_new) >= 0) /* Snip drive number off and ignore it */
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res = follow_path(&djn, path_new); /* and make sure if new object name is not conflicting */
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else
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res = FR_INVALID_DRIVE;
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@ -3850,6 +3886,7 @@ FRESULT f_setlabel (
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/* Create a volume label in directory form */
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vn[0] = 0;
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if (label[0] == '/') label++; // dpgeorge: skip '/' to handle our volume names
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for (sl = 0; label[sl]; sl++) ; /* Get name length */
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for ( ; sl && label[sl-1] == ' '; sl--) ; /* Remove trailing spaces */
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if (sl) { /* Create volume label in directory form */
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@ -4010,7 +4047,7 @@ FRESULT f_mkfs (
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/* Check mounted drive and clear work area */
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if (sfd > 1) return FR_INVALID_PARAMETER;
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vol = get_ldnumber(&path);
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vol = ff_get_ldnumber(&path);
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if (vol < 0) return FR_INVALID_DRIVE;
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fs = FatFs[vol];
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if (!fs) return FR_NOT_ENABLED;
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@ -36,7 +36,7 @@ typedef struct {
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BYTE pd; /* Physical drive number */
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BYTE pt; /* Partition: 0:Auto detect, 1-4:Forced partition) */
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} PARTITION;
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extern PARTITION VolToPart[]; /* Volume - Partition resolution table */
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extern const PARTITION VolToPart[]; /* Volume - Partition resolution table */
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#define LD2PD(vol) (VolToPart[vol].pd) /* Get physical drive number */
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#define LD2PT(vol) (VolToPart[vol].pt) /* Get partition index */
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@ -273,8 +273,16 @@ void ff_rel_grant (_SYNC_t sobj); /* Unlock sync object */
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int ff_del_syncobj (_SYNC_t sobj); /* Delete a sync object */
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#endif
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// dpgeorge: added the following 3 declarations to support our volume names
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// Current drive
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extern BYTE ff_CurrVol;
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// Returns logical drive number (-1:invalid drive)
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int ff_get_ldnumber(const TCHAR** path);
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// Store the volume name into dest, and advance the pointer
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void ff_get_volname(BYTE vol, TCHAR **dest);
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/*--------------------------------------------------------------*/
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/* Flags and offset address */
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