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udf: Push sb argument to udf_name_[to|from]_CS0() 

Push superblock argument to udf_name_[to|from]_CS0() functions so that
we can decide about character conversion functions there.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2018-04-16 16:57:57 +02:00
parent e966fc8d99
commit d504adc291
1 changed files with 24 additions and 33 deletions
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57
fs/udf/unicode.c
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@ -129,9 +129,9 @@ static int udf_name_conv_char(uint8_t *str_o, int str_o_max_len,
return gotch; return gotch;
} }
static int udf_name_from_CS0(uint8_t *str_o, int str_max_len, static int udf_name_from_CS0(struct super_block *sb,
uint8_t *str_o, int str_max_len,
const uint8_t *ocu, int ocu_len, const uint8_t *ocu, int ocu_len,
int (*conv_f)(wchar_t, unsigned char *, int),
int translate) int translate)
{ {
uint32_t c; uint32_t c;
@ -148,6 +148,7 @@ static int udf_name_from_CS0(uint8_t *str_o, int str_max_len,
unsigned short valueCRC; unsigned short valueCRC;
uint8_t ext[EXT_SIZE * NLS_MAX_CHARSET_SIZE + 1]; uint8_t ext[EXT_SIZE * NLS_MAX_CHARSET_SIZE + 1];
uint8_t crc[CRC_LEN]; uint8_t crc[CRC_LEN];
int (*conv_f)(wchar_t, unsigned char *, int);
if (str_max_len <= 0) if (str_max_len <= 0)
return 0; return 0;
@ -157,6 +158,13 @@ static int udf_name_from_CS0(uint8_t *str_o, int str_max_len,
return 0; return 0;
} }
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
conv_f = udf_uni2char_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
conv_f = UDF_SB(sb)->s_nls_map->uni2char;
} else
BUG();
cmp_id = ocu[0]; cmp_id = ocu[0];
if (cmp_id != 8 && cmp_id != 16) { if (cmp_id != 8 && cmp_id != 16) {
memset(str_o, 0, str_max_len); memset(str_o, 0, str_max_len);
@ -247,18 +255,26 @@ static int udf_name_from_CS0(uint8_t *str_o, int str_max_len,
return str_o_len; return str_o_len;
} }
static int udf_name_to_CS0(uint8_t *ocu, int ocu_max_len, static int udf_name_to_CS0(struct super_block *sb,
const uint8_t *str_i, int str_len, uint8_t *ocu, int ocu_max_len,
int (*conv_f)(const unsigned char *, int, wchar_t *)) const uint8_t *str_i, int str_len)
{ {
int i, len; int i, len;
unsigned int max_val; unsigned int max_val;
wchar_t uni_char; wchar_t uni_char;
int u_len, u_ch; int u_len, u_ch;
int (*conv_f)(const unsigned char *, int, wchar_t *);
if (ocu_max_len <= 0) if (ocu_max_len <= 0)
return 0; return 0;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
conv_f = udf_char2uni_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
conv_f = UDF_SB(sb)->s_nls_map->char2uni;
} else
BUG();
memset(ocu, 0, ocu_max_len); memset(ocu, 0, ocu_max_len);
ocu[0] = 8; ocu[0] = 8;
max_val = 0xff; max_val = 0xff;
@ -298,7 +314,6 @@ try_again:
int udf_dstrCS0toChar(struct super_block *sb, uint8_t *utf_o, int o_len, int udf_dstrCS0toChar(struct super_block *sb, uint8_t *utf_o, int o_len,
const uint8_t *ocu_i, int i_len) const uint8_t *ocu_i, int i_len)
{ {
int (*conv_f)(wchar_t, unsigned char *, int);
int s_len = 0; int s_len = 0;
if (i_len > 0) { if (i_len > 0) {
@ -310,20 +325,12 @@ int udf_dstrCS0toChar(struct super_block *sb, uint8_t *utf_o, int o_len,
} }
} }
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) { return udf_name_from_CS0(sb, utf_o, o_len, ocu_i, s_len, 0);
conv_f = udf_uni2char_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
conv_f = UDF_SB(sb)->s_nls_map->uni2char;
} else
BUG();
return udf_name_from_CS0(utf_o, o_len, ocu_i, s_len, conv_f, 0);
} }
int udf_get_filename(struct super_block *sb, const uint8_t *sname, int slen, int udf_get_filename(struct super_block *sb, const uint8_t *sname, int slen,
uint8_t *dname, int dlen) uint8_t *dname, int dlen)
{ {
int (*conv_f)(wchar_t, unsigned char *, int);
int ret; int ret;
if (!slen) if (!slen)
@ -332,14 +339,7 @@ int udf_get_filename(struct super_block *sb, const uint8_t *sname, int slen,
if (dlen <= 0) if (dlen <= 0)
return 0; return 0;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) { ret = udf_name_from_CS0(sb, dname, dlen, sname, slen, 1);
conv_f = udf_uni2char_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
conv_f = UDF_SB(sb)->s_nls_map->uni2char;
} else
BUG();
ret = udf_name_from_CS0(dname, dlen, sname, slen, conv_f, 1);
/* Zero length filename isn't valid... */ /* Zero length filename isn't valid... */
if (ret == 0) if (ret == 0)
ret = -EINVAL; ret = -EINVAL;
@ -349,15 +349,6 @@ int udf_get_filename(struct super_block *sb, const uint8_t *sname, int slen,
int udf_put_filename(struct super_block *sb, const uint8_t *sname, int slen, int udf_put_filename(struct super_block *sb, const uint8_t *sname, int slen,
uint8_t *dname, int dlen) uint8_t *dname, int dlen)
{ {
int (*conv_f)(const unsigned char *, int, wchar_t *); return udf_name_to_CS0(sb, dname, dlen, sname, slen);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
conv_f = udf_char2uni_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
conv_f = UDF_SB(sb)->s_nls_map->char2uni;
} else
BUG();
return udf_name_to_CS0(dname, dlen, sname, slen, conv_f);
} }