[PATCH 04/12] staging: exfat: Remove FAT/VFAT mount support, part 4
From: Valdis Kletnieks
Date: Tue Nov 12 2019 - 16:13:40 EST
The code simplification from the previous patch rendered a few more
routines unreferenced, so heave them over the side as well.
Signed-off-by: Valdis Kletnieks <Valdis.Kletnieks@xxxxxx>
---
drivers/staging/exfat/exfat.h | 19 ---
drivers/staging/exfat/exfat_core.c | 137 --------------------
drivers/staging/exfat/exfat_nls.c | 192 -----------------------------
3 files changed, 348 deletions(-)
diff --git a/drivers/staging/exfat/exfat.h b/drivers/staging/exfat/exfat.h
index 9ea865f607af..470e409ef536 100644
--- a/drivers/staging/exfat/exfat.h
+++ b/drivers/staging/exfat/exfat.h
@@ -729,14 +729,7 @@ static inline struct exfat_inode_info *EXFAT_I(struct inode *inode)
/* NLS management function */
u16 nls_upper(struct super_block *sb, u16 a);
-int nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b);
int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b);
-void nls_uniname_to_dosname(struct super_block *sb,
- struct dos_name_t *p_dosname,
- struct uni_name_t *p_uniname, bool *p_lossy);
-void nls_dosname_to_uniname(struct super_block *sb,
- struct uni_name_t *p_uniname,
- struct dos_name_t *p_dosname);
void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
struct uni_name_t *p_uniname);
void nls_cstring_to_uniname(struct super_block *sb,
@@ -805,10 +798,6 @@ void exfat_set_entry_time(struct dentry_t *p_entry, struct timestamp_t *tp,
u8 mode);
s32 exfat_init_dir_entry(struct super_block *sb, struct chain_t *p_dir,
s32 entry, u32 type, u32 start_clu, u64 size);
-s32 exfat_init_ext_dir_entry(struct super_block *sb, struct chain_t *p_dir,
- s32 entry, s32 num_entries,
- struct uni_name_t *p_uniname,
- struct dos_name_t *p_dosname);
void init_file_entry(struct file_dentry_t *ep, u32 type);
void init_strm_entry(struct strm_dentry_t *ep, u8 flags, u32 start_clu,
u64 size);
@@ -850,25 +839,17 @@ bool is_dir_empty(struct super_block *sb, struct chain_t *p_dir);
s32 get_num_entries_and_dos_name(struct super_block *sb, struct chain_t *p_dir,
struct uni_name_t *p_uniname, s32 *entries,
struct dos_name_t *p_dosname);
-void get_uni_name_from_dos_entry(struct super_block *sb,
- struct dos_dentry_t *ep,
- struct uni_name_t *p_uniname, u8 mode);
void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u16 *uniname);
s32 extract_uni_name_from_name_entry(struct name_dentry_t *ep,
u16 *uniname, s32 order);
-s32 fat_generate_dos_name(struct super_block *sb, struct chain_t *p_dir,
- struct dos_name_t *p_dosname);
-void fat_attach_count_to_dos_name(u8 *dosname, s32 count);
-s32 fat_calc_num_entries(struct uni_name_t *p_uniname);
s32 exfat_calc_num_entries(struct uni_name_t *p_uniname);
u16 calc_checksum_2byte(void *data, s32 len, u16 chksum, s32 type);
/* name resolution functions */
s32 resolve_path(struct inode *inode, char *path, struct chain_t *p_dir,
struct uni_name_t *p_uniname);
-s32 resolve_name(u8 *name, u8 **arg);
/* file operation functions */
s32 exfat_mount(struct super_block *sb, struct pbr_sector_t *p_pbr);
diff --git a/drivers/staging/exfat/exfat_core.c b/drivers/staging/exfat/exfat_core.c
index 77b826dfdeda..c3454e883e3c 100644
--- a/drivers/staging/exfat/exfat_core.c
+++ b/drivers/staging/exfat/exfat_core.c
@@ -1976,21 +1976,6 @@ s32 get_num_entries_and_dos_name(struct super_block *sb, struct chain_t *p_dir,
return 0;
}
-void get_uni_name_from_dos_entry(struct super_block *sb,
- struct dos_dentry_t *ep,
- struct uni_name_t *p_uniname, u8 mode)
-{
- struct dos_name_t dos_name;
-
- if (mode == 0x0)
- dos_name.name_case = 0x0;
- else
- dos_name.name_case = ep->lcase;
-
- memcpy(dos_name.name, ep->name, DOS_NAME_LENGTH);
- nls_dosname_to_uniname(sb, p_uniname, &dos_name);
-}
-
void exfat_get_uni_name_from_ext_entry(struct super_block *sb,
struct chain_t *p_dir, s32 entry,
u16 *uniname)
@@ -2045,128 +2030,6 @@ s32 extract_uni_name_from_name_entry(struct name_dentry_t *ep, u16 *uniname,
return len;
}
-s32 fat_generate_dos_name(struct super_block *sb, struct chain_t *p_dir,
- struct dos_name_t *p_dosname)
-{
- int i, j, count = 0;
- bool count_begin = false;
- s32 dentries_per_clu;
- u32 type;
- u8 bmap[128/* 1 ~ 1023 */];
- struct chain_t clu;
- struct dos_dentry_t *ep;
- struct fs_info_t *p_fs = &(EXFAT_SB(sb)->fs_info);
-
- memset(bmap, 0, sizeof(bmap));
- exfat_bitmap_set(bmap, 0);
-
- if (p_dir->dir == CLUSTER_32(0)) /* FAT16 root_dir */
- dentries_per_clu = p_fs->dentries_in_root;
- else
- dentries_per_clu = p_fs->dentries_per_clu;
-
- clu.dir = p_dir->dir;
- clu.flags = p_dir->flags;
-
- while (clu.dir != CLUSTER_32(~0)) {
- if (p_fs->dev_ejected)
- break;
-
- for (i = 0; i < dentries_per_clu; i++) {
- ep = (struct dos_dentry_t *)get_entry_in_dir(sb, &clu,
- i, NULL);
- if (!ep)
- return -ENOENT;
-
- type = p_fs->fs_func->get_entry_type((struct dentry_t *)
- ep);
-
- if (type == TYPE_UNUSED)
- break;
- if ((type != TYPE_FILE) && (type != TYPE_DIR))
- continue;
-
- count = 0;
- count_begin = false;
-
- for (j = 0; j < 8; j++) {
- if (ep->name[j] == ' ')
- break;
-
- if (ep->name[j] == '~') {
- count_begin = true;
- } else if (count_begin) {
- if ((ep->name[j] >= '0') &&
- (ep->name[j] <= '9')) {
- count = count * 10 +
- (ep->name[j] - '0');
- } else {
- count = 0;
- count_begin = false;
- }
- }
- }
-
- if ((count > 0) && (count < 1024))
- exfat_bitmap_set(bmap, count);
- }
-
- if (p_dir->dir == CLUSTER_32(0))
- break; /* FAT16 root_dir */
-
- if (FAT_read(sb, clu.dir, &clu.dir) != 0)
- return -EIO;
- }
-
- count = 0;
- for (i = 0; i < 128; i++) {
- if (bmap[i] != 0xFF) {
- for (j = 0; j < 8; j++) {
- if (exfat_bitmap_test(&bmap[i], j) == 0) {
- count = (i << 3) + j;
- break;
- }
- }
- if (count != 0)
- break;
- }
- }
-
- if ((count == 0) || (count >= 1024))
- return -EEXIST;
- fat_attach_count_to_dos_name(p_dosname->name, count);
-
- /* Now dos_name has DOS~????.EXT */
- return 0;
-}
-
-void fat_attach_count_to_dos_name(u8 *dosname, s32 count)
-{
- int i, j, length;
- char str_count[6];
-
- snprintf(str_count, sizeof(str_count), "~%d", count);
- length = strlen(str_count);
-
- i = 0;
- j = 0;
- while (j <= (8 - length)) {
- i = j;
- if (dosname[j] == ' ')
- break;
- if (dosname[j] & 0x80)
- j += 2;
- else
- j++;
- }
-
- for (j = 0; j < length; i++, j++)
- dosname[i] = (u8)str_count[j];
-
- if (i == 7)
- dosname[7] = ' ';
-}
-
s32 exfat_calc_num_entries(struct uni_name_t *p_uniname)
{
s32 len;
diff --git a/drivers/staging/exfat/exfat_nls.c b/drivers/staging/exfat/exfat_nls.c
index a5c4b68925fb..91e8b0c4dce7 100644
--- a/drivers/staging/exfat/exfat_nls.c
+++ b/drivers/staging/exfat/exfat_nls.c
@@ -7,13 +7,6 @@
#include <linux/nls.h>
#include "exfat.h"
-static u16 bad_dos_chars[] = {
- /* + , ; = [ ] */
- 0x002B, 0x002C, 0x003B, 0x003D, 0x005B, 0x005D,
- 0xFF0B, 0xFF0C, 0xFF1B, 0xFF1D, 0xFF3B, 0xFF3D,
- 0
-};
-
static u16 bad_uni_chars[] = {
/* " * / : < > ? \ | */
0x0022, 0x002A, 0x002F, 0x003A,
@@ -96,11 +89,6 @@ static u16 *nls_wstrchr(u16 *str, u16 wchar)
return NULL;
}
-int nls_dosname_cmp(struct super_block *sb, u8 *a, u8 *b)
-{
- return strncmp(a, b, DOS_NAME_LENGTH);
-}
-
int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b)
{
int i;
@@ -114,186 +102,6 @@ int nls_uniname_cmp(struct super_block *sb, u16 *a, u16 *b)
return 0;
}
-void nls_uniname_to_dosname(struct super_block *sb,
- struct dos_name_t *p_dosname,
- struct uni_name_t *p_uniname, bool *p_lossy)
-{
- int i, j, len;
- bool lossy = false;
- u8 buf[MAX_CHARSET_SIZE];
- u8 lower = 0, upper = 0;
- u8 *dosname = p_dosname->name;
- u16 *uniname = p_uniname->name;
- u16 *p, *last_period;
- struct nls_table *nls = EXFAT_SB(sb)->nls_disk;
-
- for (i = 0; i < DOS_NAME_LENGTH; i++)
- *(dosname + i) = ' ';
-
- if (!nls_uniname_cmp(sb, uniname, (u16 *)UNI_CUR_DIR_NAME)) {
- *(dosname) = '.';
- p_dosname->name_case = 0x0;
- if (p_lossy)
- *p_lossy = false;
- return;
- }
-
- if (!nls_uniname_cmp(sb, uniname, (u16 *)UNI_PAR_DIR_NAME)) {
- *(dosname) = '.';
- *(dosname + 1) = '.';
- p_dosname->name_case = 0x0;
- if (p_lossy)
- *p_lossy = false;
- return;
- }
-
- /* search for the last embedded period */
- last_period = NULL;
- for (p = uniname; *p; p++) {
- if (*p == (u16)'.')
- last_period = p;
- }
-
- i = 0;
- while (i < DOS_NAME_LENGTH) {
- if (i == 8) {
- if (!last_period)
- break;
-
- if (uniname <= last_period) {
- if (uniname < last_period)
- lossy = true;
- uniname = last_period + 1;
- }
- }
-
- if (*uniname == (u16)'\0') {
- break;
- } else if (*uniname == (u16)' ') {
- lossy = true;
- } else if (*uniname == (u16)'.') {
- if (uniname < last_period)
- lossy = true;
- else
- i = 8;
- } else if (nls_wstrchr(bad_dos_chars, *uniname)) {
- lossy = true;
- *(dosname + i) = '_';
- i++;
- } else {
- len = convert_uni_to_ch(nls, buf, *uniname, &lossy);
-
- if (len > 1) {
- if ((i >= 8) && ((i + len) > DOS_NAME_LENGTH))
- break;
-
- if ((i < 8) && ((i + len) > 8)) {
- i = 8;
- continue;
- }
-
- lower = 0xFF;
-
- for (j = 0; j < len; j++, i++)
- *(dosname + i) = *(buf + j);
- } else { /* len == 1 */
- if ((*buf >= 'a') && (*buf <= 'z')) {
- *(dosname + i) = *buf - ('a' - 'A');
-
- if (i < 8)
- lower |= 0x08;
- else
- lower |= 0x10;
- } else if ((*buf >= 'A') && (*buf <= 'Z')) {
- *(dosname + i) = *buf;
-
- if (i < 8)
- upper |= 0x08;
- else
- upper |= 0x10;
- } else {
- *(dosname + i) = *buf;
- }
- i++;
- }
- }
-
- uniname++;
- }
-
- if (*dosname == 0xE5)
- *dosname = 0x05;
-
- if (*uniname != 0x0)
- lossy = true;
-
- if (upper & lower)
- p_dosname->name_case = 0xFF;
- else
- p_dosname->name_case = lower;
-
- if (p_lossy)
- *p_lossy = lossy;
-}
-
-void nls_dosname_to_uniname(struct super_block *sb,
- struct uni_name_t *p_uniname,
- struct dos_name_t *p_dosname)
-{
- int i = 0, j, n = 0;
- u8 buf[DOS_NAME_LENGTH + 2];
- u8 *dosname = p_dosname->name;
- u16 *uniname = p_uniname->name;
- struct nls_table *nls = EXFAT_SB(sb)->nls_disk;
-
- if (*dosname == 0x05) {
- *buf = 0xE5;
- i++;
- n++;
- }
-
- for (; i < 8; i++, n++) {
- if (*(dosname + i) == ' ')
- break;
-
- if ((*(dosname + i) >= 'A') && (*(dosname + i) <= 'Z') &&
- (p_dosname->name_case & 0x08))
- *(buf + n) = *(dosname + i) + ('a' - 'A');
- else
- *(buf + n) = *(dosname + i);
- }
- if (*(dosname + 8) != ' ') {
- *(buf + n) = '.';
- n++;
- }
-
- for (i = 8; i < DOS_NAME_LENGTH; i++, n++) {
- if (*(dosname + i) == ' ')
- break;
-
- if ((*(dosname + i) >= 'A') && (*(dosname + i) <= 'Z') &&
- (p_dosname->name_case & 0x10))
- *(buf + n) = *(dosname + i) + ('a' - 'A');
- else
- *(buf + n) = *(dosname + i);
- }
- *(buf + n) = '\0';
-
- i = 0;
- j = 0;
- while (j < (MAX_NAME_LENGTH - 1)) {
- if (*(buf + i) == '\0')
- break;
-
- i += convert_ch_to_uni(nls, uniname, (buf + i), NULL);
-
- uniname++;
- j++;
- }
-
- *uniname = (u16)'\0';
-}
-
void nls_uniname_to_cstring(struct super_block *sb, u8 *p_cstring,
struct uni_name_t *p_uniname)
{
--
2.24.0