#include <linux/kernel.h>
#include <linux/string.h> /* for memset */
#include <linux/nls.h>
-#include <linux/udf_fs.h>
+#include <linux/crc-itu-t.h>
#include "udf_sb.h"
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;
- if ((!dest) || (!ptr) || (!size))
+ if (!dest || !ptr || !size)
return -1;
+ BUG_ON(size < 2);
- memset(dest, 0, sizeof(struct ustr));
- usesize = (size > UDF_NAME_LEN) ? UDF_NAME_LEN : size;
+ usesize = min_t(size_t, ptr[size - 1], sizeof(dest->u_name));
+ usesize = min(usesize, size - 2);
dest->u_cmpID = ptr[0];
- dest->u_len = ptr[size - 1];
- memcpy(dest->u_name, ptr + 1, usesize - 1);
+ dest->u_len = usesize;
+ memcpy(dest->u_name, ptr + 1, usesize);
+ memset(dest->u_name + usesize, 0, sizeof(dest->u_name) - usesize);
+
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;
dest->u_cmpID = ptr[0];
dest->u_len = exactsize - 1;
memcpy(dest->u_name, ptr + 1, exactsize - 1);
+
return 0;
}
* PURPOSE
* Convert OSTA Compressed Unicode to the UTF-8 equivalent.
*
- * DESCRIPTION
- * This routine is only called by udf_filldir().
- *
* PRE-CONDITIONS
* utf Pointer to UTF-8 output buffer.
* ocu Pointer to OSTA Compressed Unicode input buffer
* November 12, 1997 - Andrew E. Mileski
* Written, tested, and released.
*/
-int udf_CS0toUTF8(struct ustr *utf_o, struct ustr *ocu_i)
+int udf_CS0toUTF8(struct ustr *utf_o, const struct ustr *ocu_i)
{
- uint8_t *ocu;
- uint32_t c;
+ const uint8_t *ocu;
uint8_t cmp_id, ocu_len;
int i;
- ocu = ocu_i->u_name;
-
ocu_len = ocu_i->u_len;
- cmp_id = ocu_i->u_cmpID;
- utf_o->u_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)) {
+ cmp_id = ocu_i->u_cmpID;
+ if (cmp_id != 8 && cmp_id != 16) {
+ memset(utf_o, 0, sizeof(struct ustr));
printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
cmp_id, ocu_i->u_name);
return 0;
}
+ ocu = ocu_i->u_name;
+ utf_o->u_len = 0;
for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
- c = ocu[i++];
+ uint32_t c = ocu[i++];
if (cmp_id == 16)
c = (c << 8) | ocu[i++];
/* Compress Unicode to UTF-8 */
if (c < 0x80U)
- utf_o->u_name[utf_o->u_len++] = (uint8_t) c;
+ 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));
+ (uint8_t)(0xc0 | (c >> 6));
utf_o->u_name[utf_o->u_len++] =
- (uint8_t) (0x80 | (c & 0x3f));
+ (uint8_t)(0x80 | (c & 0x3f));
} else {
utf_o->u_name[utf_o->u_len++] =
- (uint8_t) (0xe0 | (c >> 12));
+ (uint8_t)(0xe0 | (c >> 12));
utf_o->u_name[utf_o->u_len++] =
- (uint8_t) (0x80 | ((c >> 6) & 0x3f));
+ (uint8_t)(0x80 |
+ ((c >> 6) & 0x3f));
utf_o->u_name[utf_o->u_len++] =
- (uint8_t) (0x80 | (c & 0x3f));
+ (uint8_t)(0x80 | (c & 0x3f));
}
}
utf_o->u_cmpID = 8;
* 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;
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) {
} 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 & 0xffU);
+ if (max_val == 0xffffU)
+ ocu[++u_len] = (uint8_t)(utf_char >> 8);
+ 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;
}
static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
- struct ustr *ocu_i)
+ const struct ustr *ocu_i)
{
- uint8_t *ocu;
- uint32_t c;
+ const uint8_t *ocu;
uint8_t cmp_id, ocu_len;
- int i;
+ int i, len;
- ocu = ocu_i->u_name;
ocu_len = ocu_i->u_len;
- cmp_id = ocu_i->u_cmpID;
- utf_o->u_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)) {
+ cmp_id = ocu_i->u_cmpID;
+ if (cmp_id != 8 && cmp_id != 16) {
+ memset(utf_o, 0, sizeof(struct ustr));
printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",
cmp_id, ocu_i->u_name);
return 0;
}
+ ocu = ocu_i->u_name;
+ utf_o->u_len = 0;
for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {
/* Expand OSTA compressed Unicode to Unicode */
- c = ocu[i++];
+ uint32_t 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);
+ len = nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
+ UDF_NAME_LEN - utf_o->u_len);
+ /* Valid character? */
+ if (len >= 0)
+ utf_o->u_len += len;
+ else
+ utf_o->u_name[utf_o->u_len++] = '?';
}
utf_o->u_cmpID = 8;
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;
+ int len;
+ unsigned i, max_val;
uint16_t uni_char;
int u_len;
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);
- if (len <= 0)
+ if (!len)
continue;
+ /* Invalid character, deal with it */
+ if (len < 0) {
+ len = 1;
+ uni_char = '?';
+ }
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;
- int len;
+ struct ustr *filename, *unifilename;
+ int len = 0;
- if (udf_build_ustr_exact(&unifilename, sname, flen)) {
+ filename = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!filename)
return 0;
- }
+
+ unifilename = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!unifilename)
+ goto out1;
+
+ if (udf_build_ustr_exact(unifilename, sname, flen))
+ goto out2;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
- if (!udf_CS0toUTF8(&filename, &unifilename)) {
+ if (!udf_CS0toUTF8(filename, unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
- return 0;
+ goto out2;
}
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
- if (!udf_CS0toNLS
- (UDF_SB(sb)->s_nls_map, &filename, &unifilename)) {
+ if (!udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
+ unifilename)) {
udf_debug("Failed in udf_get_filename: sname = %s\n",
sname);
- return 0;
+ goto out2;
}
} else
- return 0;
-
- if ((len =
- udf_translate_to_linux(dname, filename.u_name, filename.u_len,
- unifilename.u_name, unifilename.u_len))) {
- return len;
- }
- return 0;
+ goto out2;
+
+ len = udf_translate_to_linux(dname, filename->u_name, filename->u_len,
+ unifilename->u_name, unifilename->u_len);
+out2:
+ kfree(unifilename);
+out1:
+ kfree(filename);
+ return len;
}
-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))) {
+ 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
return 0;
}
#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;
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);
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 (curr == EXT_MARK &&
+ (udfLen - index - 1) <= EXT_SIZE) {
if (udfLen == index + 1)
hasExt = 0;
else {
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;
} else if (newIndex > 250)
newIndex = 250;
newName[newIndex++] = CRC_MARK;
- valueCRC = udf_crc(fidName, fidNameLen, 0);
+ valueCRC = crc_itu_t(0, fidName, fidNameLen);
newName[newIndex++] = hexChar[(valueCRC & 0xf000) >> 12];
newName[newIndex++] = hexChar[(valueCRC & 0x0f00) >> 8];
newName[newIndex++] = hexChar[(valueCRC & 0x00f0) >> 4];
newName[newIndex++] = ext[index];
}
}
+
return newIndex;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff