mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-31 08:21:36 +01:00
353 lines
8.1 KiB
C
353 lines
8.1 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Stäubli Faverges - <www.staubli.com>
|
|
* Pierre AUBERT p.aubert@staubli.com
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <config.h>
|
|
#include <linux/ctype.h>
|
|
|
|
#include "dos.h"
|
|
#include "fdos.h"
|
|
|
|
static int dir_read (Fs_t *fs,
|
|
Slot_t *dir,
|
|
Directory_t *dirent,
|
|
int num,
|
|
struct vfat_state *v);
|
|
|
|
static int unicode_read (char *in, char *out, int num);
|
|
static int match (const char *s, const char *p);
|
|
static unsigned char sum_shortname (char *name);
|
|
static int check_vfat (struct vfat_state *v, Directory_t *dir);
|
|
static char *conv_name (char *name, char *ext, char Case, char *ans);
|
|
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* clear_vfat --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static void clear_vfat (struct vfat_state *v)
|
|
{
|
|
v -> subentries = 0;
|
|
v -> status = 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* vfat_lookup --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
int vfat_lookup (Slot_t *dir,
|
|
Fs_t *fs,
|
|
Directory_t *dirent,
|
|
int *entry,
|
|
int *vfat_start,
|
|
char *filename,
|
|
int flags,
|
|
char *outname,
|
|
Slot_t *file)
|
|
{
|
|
int found;
|
|
struct vfat_state vfat;
|
|
char newfile [VSE_NAMELEN];
|
|
int vfat_present = 0;
|
|
|
|
if (*entry == -1) {
|
|
return -1;
|
|
}
|
|
|
|
found = 0;
|
|
clear_vfat (&vfat);
|
|
while (1) {
|
|
if (dir_read (fs, dir, dirent, *entry, &vfat) < 0) {
|
|
if (vfat_start) {
|
|
*vfat_start = *entry;
|
|
}
|
|
break;
|
|
}
|
|
(*entry)++;
|
|
|
|
/* Empty slot */
|
|
if (dirent -> name[0] == '\0'){
|
|
if (vfat_start == 0) {
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (dirent -> attr == ATTR_VSE) {
|
|
/* VSE entry, continue */
|
|
continue;
|
|
}
|
|
if ( (dirent -> name [0] == DELMARK) ||
|
|
((dirent -> attr & ATTR_DIRECTORY) != 0 &&
|
|
(flags & ACCEPT_DIR) == 0) ||
|
|
((dirent -> attr & ATTR_VOLUME) != 0 &&
|
|
(flags & ACCEPT_LABEL) == 0) ||
|
|
(((dirent -> attr & (ATTR_DIRECTORY | ATTR_VOLUME)) == 0) &&
|
|
(flags & ACCEPT_PLAIN) == 0)) {
|
|
clear_vfat (&vfat);
|
|
continue;
|
|
}
|
|
|
|
vfat_present = check_vfat (&vfat, dirent);
|
|
if (vfat_start) {
|
|
*vfat_start = *entry - 1;
|
|
if (vfat_present) {
|
|
*vfat_start -= vfat.subentries;
|
|
}
|
|
}
|
|
|
|
if (dirent -> attr & ATTR_VOLUME) {
|
|
strncpy (newfile, dirent -> name, 8);
|
|
newfile [8] = '\0';
|
|
strncat (newfile, dirent -> ext, 3);
|
|
newfile [11] = '\0';
|
|
}
|
|
else {
|
|
conv_name (dirent -> name, dirent -> ext, dirent -> Case, newfile);
|
|
}
|
|
|
|
if (flags & MATCH_ANY) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
|
|
if ((vfat_present && match (vfat.name, filename)) ||
|
|
(match (newfile, filename))) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
clear_vfat (&vfat);
|
|
}
|
|
|
|
if (found) {
|
|
if ((flags & DO_OPEN) && file) {
|
|
if (open_file (file, dirent) < 0) {
|
|
return (-1);
|
|
}
|
|
}
|
|
if (outname) {
|
|
if (vfat_present) {
|
|
strcpy (outname, vfat.name);
|
|
}
|
|
else {
|
|
strcpy (outname, newfile);
|
|
}
|
|
}
|
|
return (0); /* File found */
|
|
} else {
|
|
*entry = -1;
|
|
return -1; /* File not found */
|
|
}
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* dir_read -- Read one directory entry
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static int dir_read (Fs_t *fs,
|
|
Slot_t *dir,
|
|
Directory_t *dirent,
|
|
int num,
|
|
struct vfat_state *v)
|
|
{
|
|
|
|
/* read the directory entry */
|
|
if (read_file (fs,
|
|
dir,
|
|
(char *)dirent,
|
|
num * MDIR_SIZE,
|
|
MDIR_SIZE) != MDIR_SIZE) {
|
|
return (-1);
|
|
}
|
|
|
|
if (v && (dirent -> attr == ATTR_VSE)) {
|
|
struct vfat_subentry *vse;
|
|
unsigned char id, last_flag;
|
|
char *c;
|
|
|
|
vse = (struct vfat_subentry *) dirent;
|
|
id = vse -> id & VSE_MASK;
|
|
last_flag = (vse -> id & VSE_LAST);
|
|
if (id > MAX_VFAT_SUBENTRIES) {
|
|
/* Invalid VSE entry */
|
|
return (-1);
|
|
}
|
|
|
|
|
|
/* Decode VSE */
|
|
if(v -> sum != vse -> sum) {
|
|
clear_vfat (v);
|
|
v -> sum = vse -> sum;
|
|
}
|
|
|
|
|
|
v -> status |= 1 << (id - 1);
|
|
if (last_flag) {
|
|
v -> subentries = id;
|
|
}
|
|
|
|
c = &(v -> name [VSE_NAMELEN * (id - 1)]);
|
|
c += unicode_read (vse->text1, c, VSE1SIZE);
|
|
c += unicode_read (vse->text2, c, VSE2SIZE);
|
|
c += unicode_read (vse->text3, c, VSE3SIZE);
|
|
|
|
if (last_flag) {
|
|
*c = '\0'; /* Null terminate long name */
|
|
}
|
|
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* unicode_read --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static int unicode_read (char *in, char *out, int num)
|
|
{
|
|
int j;
|
|
|
|
for (j = 0; j < num; ++j) {
|
|
if (in [1])
|
|
*out = '_';
|
|
else
|
|
*out = in [0];
|
|
out ++;
|
|
in += 2;
|
|
}
|
|
return num;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------------
|
|
* match --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static int match (const char *s, const char *p)
|
|
{
|
|
|
|
for (; *p != '\0'; ) {
|
|
if (toupper (*s) != toupper (*p)) {
|
|
return (0);
|
|
}
|
|
p++;
|
|
s++;
|
|
}
|
|
|
|
if (*s != '\0') {
|
|
return (0);
|
|
}
|
|
else {
|
|
return (1);
|
|
}
|
|
}
|
|
/*-----------------------------------------------------------------------------
|
|
* sum_shortname --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static unsigned char sum_shortname (char *name)
|
|
{
|
|
unsigned char sum;
|
|
int j;
|
|
|
|
for (j = sum = 0; j < 11; ++j) {
|
|
sum = ((sum & 1) ? 0x80 : 0) + (sum >> 1) +
|
|
(name [j] ? name [j] : ' ');
|
|
}
|
|
return (sum);
|
|
}
|
|
/*-----------------------------------------------------------------------------
|
|
* check_vfat --
|
|
* Return 1 if long name is valid, 0 else
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static int check_vfat (struct vfat_state *v, Directory_t *dir)
|
|
{
|
|
char name[12];
|
|
|
|
if (v -> subentries == 0) {
|
|
return 0;
|
|
}
|
|
|
|
strncpy (name, dir -> name, 8);
|
|
strncpy (name + 8, dir -> ext, 3);
|
|
name [11] = '\0';
|
|
|
|
if (v -> sum != sum_shortname (name)) {
|
|
return 0;
|
|
}
|
|
|
|
if( (v -> status & ((1 << v -> subentries) - 1)) !=
|
|
(1 << v -> subentries) - 1) {
|
|
return 0;
|
|
}
|
|
v->name [VSE_NAMELEN * v -> subentries] = 0;
|
|
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------------------------
|
|
* conv_name --
|
|
*-----------------------------------------------------------------------------
|
|
*/
|
|
static char *conv_name (char *name, char *ext, char Case, char *ans)
|
|
{
|
|
char tname [9], text [4];
|
|
int i;
|
|
|
|
i = 0;
|
|
while (i < 8 && name [i] != ' ' && name [i] != '\0') {
|
|
tname [i] = name [i];
|
|
i++;
|
|
}
|
|
tname [i] = '\0';
|
|
|
|
if (Case & BASECASE) {
|
|
for (i = 0; i < 8 && tname [i]; i++) {
|
|
tname [i] = tolower (tname [i]);
|
|
}
|
|
}
|
|
|
|
i = 0;
|
|
while (i < 3 && ext [i] != ' ' && ext [i] != '\0') {
|
|
text [i] = ext [i];
|
|
i++;
|
|
}
|
|
text [i] = '\0';
|
|
|
|
if (Case & EXTCASE){
|
|
for (i = 0; i < 3 && text [i]; i++) {
|
|
text [i] = tolower (text [i]);
|
|
}
|
|
}
|
|
|
|
if (*text) {
|
|
strcpy (ans, tname);
|
|
strcat (ans, ".");
|
|
strcat (ans, text);
|
|
}
|
|
else {
|
|
strcpy(ans, tname);
|
|
}
|
|
return (ans);
|
|
}
|