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-rw-r--r--fs/fdos/vfat.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/fs/fdos/vfat.c b/fs/fdos/vfat.c
deleted file mode 100644
index 2b87d0f..0000000
--- a/fs/fdos/vfat.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * (C) Copyright 2002
- * Stäubli Faverges - <www.staubli.com>
- * Pierre AUBERT p.aubert@staubli.com
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#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);
-}
generated by cgit v1.1 at 2024-11-22 12:06:51 +0000