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-rw-r--r--fs/udf/unicode.c155
1 files changed, 73 insertions, 82 deletions
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index 46835240275c..9e6099c26c27 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -29,21 +29,23 @@
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)
+static int udf_char_to_ustr(struct ustr *dest, const uint8_t *src, int strlen)
{
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;
}
/*
* udf_build_ustr
*/
-int udf_build_ustr(struct ustr *dest, dstring * ptr, int size)
+int udf_build_ustr(struct ustr *dest, dstring *ptr, int size)
{
int usesize;
@@ -55,13 +57,14 @@ int udf_build_ustr(struct ustr *dest, dstring * ptr, int size)
dest->u_cmpID = ptr[0];
dest->u_len = ptr[size - 1];
memcpy(dest->u_name, ptr + 1, usesize - 1);
+
return 0;
}
/*
* udf_build_ustr_exact
*/
-static int udf_build_ustr_exact(struct ustr *dest, dstring * ptr, int exactsize)
+static int udf_build_ustr_exact(struct ustr *dest, dstring *ptr, int exactsize)
{
if ((!dest) || (!ptr) || (!exactsize))
return -1;
@@ -70,6 +73,7 @@ static int udf_build_ustr_exact(struct ustr *dest, dstring * ptr, int exactsize)
dest->u_cmpID = ptr[0];
dest->u_len = exactsize - 1;
memcpy(dest->u_name, ptr + 1, exactsize - 1);
+
return 0;
}
@@ -129,20 +133,15 @@ int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
c = (c << 8) | ocu[i++];
/* Compress Unicode to UTF-8 */
- if (c < 0x80U)
- utf_o->u_name[utf_o->u_len++] = (uint8_t) c;
- 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));
+ if (c < 0x80U) {
+ utf_o->u_name[utf_o->u_len++] = (uint8_t)c;
+ } 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 {
- 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_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;
@@ -173,7 +172,7 @@ int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
* November 12, 1997 - Andrew E. Mileski
* Written, tested, and released.
*/
-static int udf_UTF8toCS0(dstring * ocu, struct ustr *utf, int length)
+static int udf_UTF8toCS0(dstring *ocu, struct ustr *utf, int length)
{
unsigned c, i, max_val, utf_char;
int utf_cnt, u_len;
@@ -182,12 +181,12 @@ static int udf_UTF8toCS0(dstring * ocu, struct ustr *utf, int length)
ocu[0] = 8;
max_val = 0xffU;
- try_again:
+try_again:
u_len = 0U;
utf_char = 0U;
utf_cnt = 0U;
for (i = 0U; i < utf->u_len; i++) {
- c = (uint8_t) utf->u_name[i];
+ c = (uint8_t)utf->u_name[i];
/* Complete a multi-byte UTF-8 character */
if (utf_cnt) {
@@ -213,37 +212,40 @@ static int udf_UTF8toCS0(dstring * ocu, struct ustr *utf, int length)
} 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 (max_val == 0xffU) {
max_val = 0xffffU;
- ocu[0] = (uint8_t) 0x10U;
+ ocu[0] = (uint8_t)0x10U;
goto try_again;
}
goto error_out;
}
if (max_val == 0xffffU) {
- ocu[++u_len] = (uint8_t) (utf_char >> 8);
+ ocu[++u_len] = (uint8_t)(utf_char >> 8);
}
- ocu[++u_len] = (uint8_t) (utf_char & 0xffU);
+ ocu[++u_len] = (uint8_t)(utf_char & 0xffU);
}
if (utf_cnt) {
- error_out:
+error_out:
ocu[++u_len] = '?';
printk(KERN_DEBUG "udf: bad UTF-8 character\n");
}
- ocu[length - 1] = (uint8_t) u_len + 1;
+ ocu[length - 1] = (uint8_t)u_len + 1;
+
return u_len + 1;
}
@@ -288,7 +290,7 @@ static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
return utf_o->u_len;
}
-static int udf_NLStoCS0(struct nls_table *nls, dstring * ocu, struct ustr *uni,
+static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni,
int length)
{
unsigned len, i, max_val;
@@ -299,7 +301,7 @@ static int udf_NLStoCS0(struct nls_table *nls, dstring * ocu, struct ustr *uni,
ocu[0] = 8;
max_val = 0xffU;
- try_again:
+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);
@@ -308,21 +310,21 @@ static int udf_NLStoCS0(struct nls_table *nls, dstring * ocu, struct ustr *uni,
if (uni_char > max_val) {
max_val = 0xffffU;
- ocu[0] = (uint8_t) 0x10U;
+ 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);
+ ocu[++u_len] = (uint8_t)(uni_char >> 8);
+ ocu[++u_len] = (uint8_t)(uni_char & 0xffU);
i += len - 1;
}
- ocu[length - 1] = (uint8_t) u_len + 1;
+ ocu[length - 1] = (uint8_t)u_len + 1;
return u_len + 1;
}
-int udf_get_filename(struct super_block *sb, uint8_t * sname, uint8_t * dname,
+int udf_get_filename(struct super_block *sb, uint8_t *sname, uint8_t *dname,
int flen)
{
struct ustr filename, unifilename;
@@ -334,30 +336,29 @@ int udf_get_filename(struct super_block *sb, uint8_t * sname, uint8_t * dname,
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
if (!udf_CS0toUTF8(&filename, &unifilename)) {
- udf_debug("Failed in udf_get_filename: sname = %s\n",
- sname);
+ 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)) {
- udf_debug("Failed in udf_get_filename: sname = %s\n",
- sname);
+ 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;
@@ -367,31 +368,29 @@ int udf_put_filename(struct super_block *sb, const uint8_t * sname,
}
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
- if (!
- (namelen =
- udf_UTF8toCS0(dname, &unifilename, UDF_NAME_LEN))) {
+ 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))) {
+ 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 extIndex = 0, newExtIndex = 0, hasExt = 0;
@@ -399,8 +398,8 @@ static int udf_translate_to_linux(uint8_t * newName, uint8_t * udfName,
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);
@@ -410,16 +409,13 @@ static int udf_translate_to_linux(uint8_t * newName, uint8_t * udfName,
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;
@@ -437,23 +433,16 @@ static int udf_translate_to_linux(uint8_t * newName, uint8_t * udfName,
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) {
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;
@@ -463,8 +452,9 @@ static int udf_translate_to_linux(uint8_t * newName, uint8_t * udfName,
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];
@@ -478,5 +468,6 @@ static int udf_translate_to_linux(uint8_t * newName, uint8_t * udfName,
newName[newIndex++] = ext[index];
}
}
+
return newIndex;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 15:45:00 +0000