summaryrefslogtreecommitdiff
path: root/fs/udf/unicode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/udf/unicode.c')
-rw-r--r--fs/udf/unicode.c258
1 files changed, 110 insertions, 148 deletions
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index 706c92e1dcc9..9e6099c26c27 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -31,12 +31,14 @@ static int udf_translate_to_linux(uint8_t *, uint8_t *, int, uint8_t *, int);
static int udf_char_to_ustr(struct ustr *dest, const uint8_t *src, int strlen)
{
- if ( (!dest) || (!src) || (!strlen) || (strlen > UDF_NAME_LEN-2) )
+ if ((!dest) || (!src) || (!strlen) || (strlen > UDF_NAME_LEN - 2))
return 0;
+
memset(dest, 0, sizeof(struct ustr));
memcpy(dest->u_name, src, strlen);
dest->u_cmpID = 0x08;
dest->u_len = strlen;
+
return strlen;
}
@@ -47,14 +49,15 @@ int udf_build_ustr(struct ustr *dest, dstring *ptr, int size)
{
int usesize;
- if ( (!dest) || (!ptr) || (!size) )
+ if ((!dest) || (!ptr) || (!size))
return -1;
memset(dest, 0, sizeof(struct ustr));
- usesize= (size > UDF_NAME_LEN) ? UDF_NAME_LEN : size;
- dest->u_cmpID=ptr[0];
- dest->u_len=ptr[size-1];
- memcpy(dest->u_name, ptr+1, usesize-1);
+ usesize = (size > UDF_NAME_LEN) ? UDF_NAME_LEN : size;
+ dest->u_cmpID = ptr[0];
+ dest->u_len = ptr[size - 1];
+ memcpy(dest->u_name, ptr + 1, usesize - 1);
+
return 0;
}
@@ -63,13 +66,14 @@ int udf_build_ustr(struct ustr *dest, dstring *ptr, int size)
*/
static int udf_build_ustr_exact(struct ustr *dest, dstring *ptr, int exactsize)
{
- if ( (!dest) || (!ptr) || (!exactsize) )
+ if ((!dest) || (!ptr) || (!exactsize))
return -1;
memset(dest, 0, sizeof(struct ustr));
- dest->u_cmpID=ptr[0];
- dest->u_len=exactsize-1;
- memcpy(dest->u_name, ptr+1, exactsize-1);
+ dest->u_cmpID = ptr[0];
+ dest->u_len = exactsize - 1;
+ memcpy(dest->u_name, ptr + 1, exactsize - 1);
+
return 0;
}
@@ -108,22 +112,20 @@ int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
cmp_id = ocu_i->u_cmpID;
utf_o->u_len = 0;
- if (ocu_len == 0)
- {
+ if (ocu_len == 0) {
memset(utf_o, 0, sizeof(struct ustr));
utf_o->u_cmpID = 0;
utf_o->u_len = 0;
return 0;
}
- if ((cmp_id != 8) && (cmp_id != 16))
- {
- printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n", cmp_id, ocu_i->u_name);
+ if ((cmp_id != 8) && (cmp_id != 16)) {
+ printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
+ cmp_id, ocu_i->u_name);
return 0;
}
- for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN-3)) ;)
- {
+ for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
c = ocu[i++];
@@ -131,21 +133,18 @@ int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
c = (c << 8) | ocu[i++];
/* Compress Unicode to UTF-8 */
- if (c < 0x80U)
+ if (c < 0x80U) {
utf_o->u_name[utf_o->u_len++] = (uint8_t)c;
- else if (c < 0x800U)
- {
+ } else if (c < 0x800U) {
utf_o->u_name[utf_o->u_len++] = (uint8_t)(0xc0 | (c >> 6));
utf_o->u_name[utf_o->u_len++] = (uint8_t)(0x80 | (c & 0x3f));
- }
- else
- {
+ } else {
utf_o->u_name[utf_o->u_len++] = (uint8_t)(0xe0 | (c >> 12));
utf_o->u_name[utf_o->u_len++] = (uint8_t)(0x80 | ((c >> 6) & 0x3f));
utf_o->u_name[utf_o->u_len++] = (uint8_t)(0x80 | (c & 0x3f));
}
}
- utf_o->u_cmpID=8;
+ utf_o->u_cmpID = 8;
return utf_o->u_len;
}
@@ -186,61 +185,46 @@ try_again:
u_len = 0U;
utf_char = 0U;
utf_cnt = 0U;
- for (i = 0U; i < utf->u_len; i++)
- {
+ for (i = 0U; i < utf->u_len; i++) {
c = (uint8_t)utf->u_name[i];
/* Complete a multi-byte UTF-8 character */
- if (utf_cnt)
- {
+ if (utf_cnt) {
utf_char = (utf_char << 6) | (c & 0x3fU);
if (--utf_cnt)
continue;
- }
- else
- {
+ } else {
/* Check for a multi-byte UTF-8 character */
- if (c & 0x80U)
- {
+ if (c & 0x80U) {
/* Start a multi-byte UTF-8 character */
- if ((c & 0xe0U) == 0xc0U)
- {
+ if ((c & 0xe0U) == 0xc0U) {
utf_char = c & 0x1fU;
utf_cnt = 1;
- }
- else if ((c & 0xf0U) == 0xe0U)
- {
+ } else if ((c & 0xf0U) == 0xe0U) {
utf_char = c & 0x0fU;
utf_cnt = 2;
- }
- else if ((c & 0xf8U) == 0xf0U)
- {
+ } else if ((c & 0xf8U) == 0xf0U) {
utf_char = c & 0x07U;
utf_cnt = 3;
- }
- else if ((c & 0xfcU) == 0xf8U)
- {
+ } else if ((c & 0xfcU) == 0xf8U) {
utf_char = c & 0x03U;
utf_cnt = 4;
- }
- else if ((c & 0xfeU) == 0xfcU)
- {
+ } else if ((c & 0xfeU) == 0xfcU) {
utf_char = c & 0x01U;
utf_cnt = 5;
- }
- else
+ } else {
goto error_out;
+ }
continue;
- } else
+ } else {
/* Single byte UTF-8 character (most common) */
utf_char = c;
+ }
}
/* Choose no compression if necessary */
- if (utf_char > max_val)
- {
- if ( 0xffU == max_val )
- {
+ if (utf_char > max_val) {
+ if (max_val == 0xffU) {
max_val = 0xffffU;
ocu[0] = (uint8_t)0x10U;
goto try_again;
@@ -248,26 +232,25 @@ try_again:
goto error_out;
}
- if (max_val == 0xffffU)
- {
+ if (max_val == 0xffffU) {
ocu[++u_len] = (uint8_t)(utf_char >> 8);
}
ocu[++u_len] = (uint8_t)(utf_char & 0xffU);
}
-
- if (utf_cnt)
- {
+ if (utf_cnt) {
error_out:
ocu[++u_len] = '?';
printk(KERN_DEBUG "udf: bad UTF-8 character\n");
}
ocu[length - 1] = (uint8_t)u_len + 1;
+
return u_len + 1;
}
-static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o, struct ustr *ocu_i)
+static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
+ struct ustr *ocu_i)
{
uint8_t *ocu;
uint32_t c;
@@ -280,36 +263,35 @@ static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o, struct ustr *
cmp_id = ocu_i->u_cmpID;
utf_o->u_len = 0;
- if (ocu_len == 0)
- {
+ if (ocu_len == 0) {
memset(utf_o, 0, sizeof(struct ustr));
utf_o->u_cmpID = 0;
utf_o->u_len = 0;
return 0;
}
- if ((cmp_id != 8) && (cmp_id != 16))
- {
- printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n", cmp_id, ocu_i->u_name);
+ if ((cmp_id != 8) && (cmp_id != 16)) {
+ printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
+ cmp_id, ocu_i->u_name);
return 0;
}
- for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN-3)) ;)
- {
+ for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
c = ocu[i++];
if (cmp_id == 16)
c = (c << 8) | ocu[i++];
- utf_o->u_len += nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
- UDF_NAME_LEN - utf_o->u_len);
+ utf_o->u_len += nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
+ UDF_NAME_LEN - utf_o->u_len);
}
- utf_o->u_cmpID=8;
+ utf_o->u_cmpID = 8;
return utf_o->u_len;
}
-static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni, int length)
+static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni,
+ int length)
{
unsigned len, i, max_val;
uint16_t uni_char;
@@ -321,19 +303,17 @@ static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni, i
try_again:
u_len = 0U;
- for (i = 0U; i < uni->u_len; i++)
- {
- len = nls->char2uni(&uni->u_name[i], uni->u_len-i, &uni_char);
+ for (i = 0U; i < uni->u_len; i++) {
+ len = nls->char2uni(&uni->u_name[i], uni->u_len - i, &uni_char);
if (len <= 0)
continue;
- if (uni_char > max_val)
- {
+ if (uni_char > max_val) {
max_val = 0xffffU;
ocu[0] = (uint8_t)0x10U;
goto try_again;
}
-
+
if (max_val == 0xffffU)
ocu[++u_len] = (uint8_t)(uni_char >> 8);
ocu[++u_len] = (uint8_t)(uni_char & 0xffU);
@@ -344,112 +324,98 @@ try_again:
return u_len + 1;
}
-int udf_get_filename(struct super_block *sb, uint8_t *sname, uint8_t *dname, int flen)
+int udf_get_filename(struct super_block *sb, uint8_t *sname, uint8_t *dname,
+ int flen)
{
struct ustr filename, unifilename;
int len;
- if (udf_build_ustr_exact(&unifilename, sname, flen))
- {
+ if (udf_build_ustr_exact(&unifilename, sname, flen)) {
return 0;
}
- if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
- {
- if (!udf_CS0toUTF8(&filename, &unifilename) )
- {
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
+ if (!udf_CS0toUTF8(&filename, &unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n", sname);
return 0;
}
- }
- else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
- {
- if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, &filename, &unifilename) )
- {
+ } else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
+ if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, &filename, &unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n", sname);
return 0;
}
- }
- else
+ } else {
return 0;
+ }
- if ((len = udf_translate_to_linux(dname, filename.u_name, filename.u_len,
- unifilename.u_name, unifilename.u_len)))
- {
+ len = udf_translate_to_linux(dname, filename.u_name, filename.u_len,
+ unifilename.u_name, unifilename.u_len);
+ if (len) {
return len;
}
+
return 0;
}
-int udf_put_filename(struct super_block *sb, const uint8_t *sname, uint8_t *dname, int flen)
+int udf_put_filename(struct super_block *sb, const uint8_t *sname,
+ uint8_t *dname, int flen)
{
struct ustr unifilename;
int namelen;
- if ( !(udf_char_to_ustr(&unifilename, sname, flen)) )
- {
+ if (!(udf_char_to_ustr(&unifilename, sname, flen))) {
return 0;
}
- if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
- {
- if ( !(namelen = udf_UTF8toCS0(dname, &unifilename, UDF_NAME_LEN)) )
- {
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
+ namelen = udf_UTF8toCS0(dname, &unifilename, UDF_NAME_LEN);
+ if (!namelen) {
return 0;
}
- }
- else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
- {
- if ( !(namelen = udf_NLStoCS0(UDF_SB(sb)->s_nls_map, dname, &unifilename, UDF_NAME_LEN)) )
- {
+ } else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
+ namelen = udf_NLStoCS0(UDF_SB(sb)->s_nls_map, dname, &unifilename, UDF_NAME_LEN);
+ if (!namelen) {
return 0;
}
- }
- else
+ } else {
return 0;
+ }
return namelen;
}
#define ILLEGAL_CHAR_MARK '_'
-#define EXT_MARK '.'
-#define CRC_MARK '#'
-#define EXT_SIZE 5
+#define EXT_MARK '.'
+#define CRC_MARK '#'
+#define EXT_SIZE 5
-static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName, int udfLen, uint8_t *fidName, int fidNameLen)
+static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName, int udfLen,
+ uint8_t *fidName, int fidNameLen)
{
- int index, newIndex = 0, needsCRC = 0;
+ int index, newIndex = 0, needsCRC = 0;
int extIndex = 0, newExtIndex = 0, hasExt = 0;
unsigned short valueCRC;
uint8_t curr;
const uint8_t hexChar[] = "0123456789ABCDEF";
- if (udfName[0] == '.' && (udfLen == 1 ||
- (udfLen == 2 && udfName[1] == '.')))
- {
+ if (udfName[0] == '.' &&
+ (udfLen == 1 || (udfLen == 2 && udfName[1] == '.'))) {
needsCRC = 1;
newIndex = udfLen;
memcpy(newName, udfName, udfLen);
- }
- else
- {
- for (index = 0; index < udfLen; index++)
- {
+ } else {
+ for (index = 0; index < udfLen; index++) {
curr = udfName[index];
- if (curr == '/' || curr == 0)
- {
+ if (curr == '/' || curr == 0) {
needsCRC = 1;
curr = ILLEGAL_CHAR_MARK;
- while (index+1 < udfLen && (udfName[index+1] == '/' ||
- udfName[index+1] == 0))
+ while (index + 1 < udfLen && (udfName[index + 1] == '/' ||
+ udfName[index + 1] == 0))
index++;
- }
- if (curr == EXT_MARK && (udfLen - index - 1) <= EXT_SIZE)
- {
- if (udfLen == index + 1)
+ } if (curr == EXT_MARK && (udfLen - index - 1) <= EXT_SIZE) {
+ if (udfLen == index + 1) {
hasExt = 0;
- else
- {
+ } else {
hasExt = 1;
extIndex = index;
newExtIndex = newIndex;
@@ -461,26 +427,22 @@ static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName, int udfLen
needsCRC = 1;
}
}
- if (needsCRC)
- {
+ if (needsCRC) {
uint8_t ext[EXT_SIZE];
int localExtIndex = 0;
- if (hasExt)
- {
+ if (hasExt) {
int maxFilenameLen;
- for(index = 0; index<EXT_SIZE && extIndex + index +1 < udfLen;
- index++ )
- {
+ for(index = 0; index < EXT_SIZE && extIndex + index + 1 < udfLen; index++) {
curr = udfName[extIndex + index + 1];
- if (curr == '/' || curr == 0)
- {
+ if (curr == '/' || curr == 0) {
needsCRC = 1;
curr = ILLEGAL_CHAR_MARK;
- while(extIndex + index + 2 < udfLen && (index + 1 < EXT_SIZE
- && (udfName[extIndex + index + 2] == '/' ||
- udfName[extIndex + index + 2] == 0)))
+ while(extIndex + index + 2 < udfLen &&
+ (index + 1 < EXT_SIZE
+ && (udfName[extIndex + index + 2] == '/' ||
+ udfName[extIndex + index + 2] == 0)))
index++;
}
ext[localExtIndex++] = curr;
@@ -490,9 +452,9 @@ static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName, int udfLen
newIndex = maxFilenameLen;
else
newIndex = newExtIndex;
- }
- else if (newIndex > 250)
+ } else if (newIndex > 250) {
newIndex = 250;
+ }
newName[newIndex++] = CRC_MARK;
valueCRC = udf_crc(fidName, fidNameLen, 0);
newName[newIndex++] = hexChar[(valueCRC & 0xf000) >> 12];
@@ -500,12 +462,12 @@ static int udf_translate_to_linux(uint8_t *newName, uint8_t *udfName, int udfLen
newName[newIndex++] = hexChar[(valueCRC & 0x00f0) >> 4];
newName[newIndex++] = hexChar[(valueCRC & 0x000f)];
- if (hasExt)
- {
+ if (hasExt) {
newName[newIndex++] = EXT_MARK;
- for (index = 0;index < localExtIndex ;index++ )
+ for (index = 0; index < localExtIndex; index++)
newName[newIndex++] = ext[index];
}
}
+
return newIndex;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 13:18:46 +0000