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-rw-r--r--fs/udf/dir.c13
-rw-r--r--fs/udf/file.c6
-rw-r--r--fs/udf/inode.c4
-rw-r--r--fs/udf/namei.c29
-rw-r--r--fs/udf/super.c38
-rw-r--r--fs/udf/udfdecl.h21
-rw-r--r--fs/udf/unicode.c642
7 files changed, 319 insertions, 434 deletions
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index 541d9c650..b51b371b8 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -45,7 +45,7 @@ static int udf_readdir(struct file *file, struct dir_context *ctx)
int block, iblock;
loff_t nf_pos;
int flen;
- unsigned char *fname = NULL;
+ unsigned char *fname = NULL, *copy_name = NULL;
unsigned char *nameptr;
uint16_t liu;
uint8_t lfi;
@@ -143,7 +143,15 @@ static int udf_readdir(struct file *file, struct dir_context *ctx)
if (poffset >= lfi) {
nameptr = (char *)(fibh.ebh->b_data + poffset - lfi);
} else {
- nameptr = fname;
+ if (!copy_name) {
+ copy_name = kmalloc(UDF_NAME_LEN,
+ GFP_NOFS);
+ if (!copy_name) {
+ ret = -ENOMEM;
+ goto out;
+ }
+ }
+ nameptr = copy_name;
memcpy(nameptr, fi->fileIdent + liu,
lfi - poffset);
memcpy(nameptr + lfi - poffset,
@@ -185,6 +193,7 @@ out:
brelse(fibh.sbh);
brelse(epos.bh);
kfree(fname);
+ kfree(copy_name);
return ret;
}
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 1af98963d..877ba1c9b 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -46,7 +46,7 @@ static void __udf_adinicb_readpage(struct page *page)
kaddr = kmap(page);
memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, inode->i_size);
- memset(kaddr + inode->i_size, 0, PAGE_CACHE_SIZE - inode->i_size);
+ memset(kaddr + inode->i_size, 0, PAGE_SIZE - inode->i_size);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap(page);
@@ -87,14 +87,14 @@ static int udf_adinicb_write_begin(struct file *file,
{
struct page *page;
- if (WARN_ON_ONCE(pos >= PAGE_CACHE_SIZE))
+ if (WARN_ON_ONCE(pos >= PAGE_SIZE))
return -EIO;
page = grab_cache_page_write_begin(mapping, 0, flags);
if (!page)
return -ENOMEM;
*pagep = page;
- if (!PageUptodate(page) && len != PAGE_CACHE_SIZE)
+ if (!PageUptodate(page) && len != PAGE_SIZE)
__udf_adinicb_readpage(page);
return 0;
}
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 166d3ed32..2dc461eeb 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -287,7 +287,7 @@ int udf_expand_file_adinicb(struct inode *inode)
if (!PageUptodate(page)) {
kaddr = kmap(page);
memset(kaddr + iinfo->i_lenAlloc, 0x00,
- PAGE_CACHE_SIZE - iinfo->i_lenAlloc);
+ PAGE_SIZE - iinfo->i_lenAlloc);
memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr,
iinfo->i_lenAlloc);
flush_dcache_page(page);
@@ -319,7 +319,7 @@ int udf_expand_file_adinicb(struct inode *inode)
inode->i_data.a_ops = &udf_adinicb_aops;
up_write(&iinfo->i_data_sem);
}
- page_cache_release(page);
+ put_page(page);
mark_inode_dirty(inode);
return err;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 42eafb91f..a2ba11eca 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -165,7 +165,7 @@ static struct fileIdentDesc *udf_find_entry(struct inode *dir,
struct fileIdentDesc *fi = NULL;
loff_t f_pos;
int block, flen;
- unsigned char *fname = NULL;
+ unsigned char *fname = NULL, *copy_name = NULL;
unsigned char *nameptr;
uint8_t lfi;
uint16_t liu;
@@ -236,7 +236,15 @@ static struct fileIdentDesc *udf_find_entry(struct inode *dir,
nameptr = (uint8_t *)(fibh->ebh->b_data +
poffset - lfi);
else {
- nameptr = fname;
+ if (!copy_name) {
+ copy_name = kmalloc(UDF_NAME_LEN,
+ GFP_NOFS);
+ if (!copy_name) {
+ fi = ERR_PTR(-ENOMEM);
+ goto out_err;
+ }
+ }
+ nameptr = copy_name;
memcpy(nameptr, fi->fileIdent + liu,
lfi - poffset);
memcpy(nameptr + lfi - poffset,
@@ -279,6 +287,7 @@ out_err:
out_ok:
brelse(epos.bh);
kfree(fname);
+ kfree(copy_name);
return fi;
}
@@ -291,7 +300,7 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
struct udf_fileident_bh fibh;
struct fileIdentDesc *fi;
- if (dentry->d_name.len > UDF_NAME_LEN - 2)
+ if (dentry->d_name.len > UDF_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);
#ifdef UDF_RECOVERY
@@ -351,7 +360,7 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
struct udf_inode_info *dinfo;
fibh->sbh = fibh->ebh = NULL;
- name = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ name = kmalloc(UDF_NAME_LEN_CS0, GFP_NOFS);
if (!name) {
*err = -ENOMEM;
goto out_err;
@@ -362,8 +371,9 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
*err = -EINVAL;
goto out_err;
}
- namelen = udf_put_filename(sb, dentry->d_name.name, name,
- dentry->d_name.len);
+ namelen = udf_put_filename(sb, dentry->d_name.name,
+ dentry->d_name.len,
+ name, UDF_NAME_LEN_CS0);
if (!namelen) {
*err = -ENAMETOOLONG;
goto out_err;
@@ -914,7 +924,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
iinfo = UDF_I(inode);
down_write(&iinfo->i_data_sem);
- name = kmalloc(UDF_NAME_LEN, GFP_NOFS);
+ name = kmalloc(UDF_NAME_LEN_CS0, GFP_NOFS);
if (!name) {
err = -ENOMEM;
goto out_no_entry;
@@ -997,8 +1007,9 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
}
if (pc->componentType == 5) {
- namelen = udf_put_filename(sb, compstart, name,
- symname - compstart);
+ namelen = udf_put_filename(sb, compstart,
+ symname - compstart,
+ name, UDF_NAME_LEN_CS0);
if (!namelen)
goto out_no_entry;
diff --git a/fs/udf/super.c b/fs/udf/super.c
index a522c15a0..36661acaf 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -887,18 +887,14 @@ static int udf_find_fileset(struct super_block *sb,
static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
{
struct primaryVolDesc *pvoldesc;
- struct ustr *instr, *outstr;
+ uint8_t *outstr;
struct buffer_head *bh;
uint16_t ident;
int ret = -ENOMEM;
- instr = kmalloc(sizeof(struct ustr), GFP_NOFS);
- if (!instr)
- return -ENOMEM;
-
- outstr = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ outstr = kmalloc(128, GFP_NOFS);
if (!outstr)
- goto out1;
+ return -ENOMEM;
bh = udf_read_tagged(sb, block, block, &ident);
if (!bh) {
@@ -923,31 +919,25 @@ static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
#endif
}
- if (!udf_build_ustr(instr, pvoldesc->volIdent, 32)) {
- ret = udf_CS0toUTF8(outstr, instr);
- if (ret < 0)
- goto out_bh;
+ ret = udf_dstrCS0toUTF8(outstr, 31, pvoldesc->volIdent, 32);
+ if (ret < 0)
+ goto out_bh;
- strncpy(UDF_SB(sb)->s_volume_ident, outstr->u_name,
- outstr->u_len > 31 ? 31 : outstr->u_len);
- udf_debug("volIdent[] = '%s'\n", UDF_SB(sb)->s_volume_ident);
- }
+ strncpy(UDF_SB(sb)->s_volume_ident, outstr, ret);
+ udf_debug("volIdent[] = '%s'\n", UDF_SB(sb)->s_volume_ident);
- if (!udf_build_ustr(instr, pvoldesc->volSetIdent, 128)) {
- ret = udf_CS0toUTF8(outstr, instr);
- if (ret < 0)
- goto out_bh;
+ ret = udf_dstrCS0toUTF8(outstr, 127, pvoldesc->volSetIdent, 128);
+ if (ret < 0)
+ goto out_bh;
- udf_debug("volSetIdent[] = '%s'\n", outstr->u_name);
- }
+ outstr[ret] = 0;
+ udf_debug("volSetIdent[] = '%s'\n", outstr);
ret = 0;
out_bh:
brelse(bh);
out2:
kfree(outstr);
-out1:
- kfree(instr);
return ret;
}
@@ -2358,7 +2348,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
le32_to_cpu(lvidiu->numDirs)) : 0)
+ buf->f_bfree;
buf->f_ffree = buf->f_bfree;
- buf->f_namelen = UDF_NAME_LEN - 2;
+ buf->f_namelen = UDF_NAME_LEN;
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index fa0044b6b..263829ef1 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -49,8 +49,8 @@ extern __printf(3, 4) void _udf_warn(struct super_block *sb,
#define UDF_EXTENT_FLAG_MASK 0xC0000000
#define UDF_NAME_PAD 4
-#define UDF_NAME_LEN 256
-#define UDF_PATH_LEN 1023
+#define UDF_NAME_LEN 254
+#define UDF_NAME_LEN_CS0 255
static inline size_t udf_file_entry_alloc_offset(struct inode *inode)
{
@@ -106,12 +106,6 @@ struct generic_desc {
__le32 volDescSeqNum;
};
-struct ustr {
- uint8_t u_cmpID;
- uint8_t u_name[UDF_NAME_LEN - 2];
- uint8_t u_len;
-};
-
/* super.c */
@@ -214,12 +208,11 @@ udf_get_lb_pblock(struct super_block *sb, struct kernel_lb_addr *loc,
}
/* unicode.c */
-extern int udf_get_filename(struct super_block *, uint8_t *, int, uint8_t *,
- int);
-extern int udf_put_filename(struct super_block *, const uint8_t *, uint8_t *,
- int);
-extern int udf_build_ustr(struct ustr *, dstring *, int);
-extern int udf_CS0toUTF8(struct ustr *, const struct ustr *);
+extern int udf_get_filename(struct super_block *, const uint8_t *, int,
+ uint8_t *, int);
+extern int udf_put_filename(struct super_block *, const uint8_t *, int,
+ uint8_t *, int);
+extern int udf_dstrCS0toUTF8(uint8_t *, int, const uint8_t *, int);
/* ialloc.c */
extern void udf_free_inode(struct inode *);
diff --git a/fs/udf/unicode.c b/fs/udf/unicode.c
index e788a05aa..695389a4f 100644
--- a/fs/udf/unicode.c
+++ b/fs/udf/unicode.c
@@ -28,199 +28,72 @@
#include "udf_sb.h"
-static int udf_translate_to_linux(uint8_t *, int, 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))
- 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 usesize;
-
- if (!dest || !ptr || !size)
- return -1;
- BUG_ON(size < 2);
-
- 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 = 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 void udf_build_ustr_exact(struct ustr *dest, dstring *ptr, int exactsize)
+static int udf_uni2char_utf8(wchar_t uni,
+ unsigned char *out,
+ int boundlen)
{
- memset(dest, 0, sizeof(struct ustr));
- dest->u_cmpID = ptr[0];
- dest->u_len = exactsize - 1;
- memcpy(dest->u_name, ptr + 1, exactsize - 1);
-}
-
-/*
- * udf_CS0toUTF8
- *
- * PURPOSE
- * Convert OSTA Compressed Unicode to the UTF-8 equivalent.
- *
- * PRE-CONDITIONS
- * utf Pointer to UTF-8 output buffer.
- * ocu Pointer to OSTA Compressed Unicode input buffer
- * of size UDF_NAME_LEN bytes.
- * both of type "struct ustr *"
- *
- * POST-CONDITIONS
- * <return> >= 0 on success.
- *
- * HISTORY
- * November 12, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-int udf_CS0toUTF8(struct ustr *utf_o, const struct ustr *ocu_i)
-{
- const uint8_t *ocu;
- uint8_t cmp_id, ocu_len;
- int i;
-
- ocu_len = ocu_i->u_len;
- if (ocu_len == 0) {
- memset(utf_o, 0, sizeof(struct ustr));
- return 0;
- }
-
- cmp_id = ocu_i->u_cmpID;
- if (cmp_id != 8 && cmp_id != 16) {
- memset(utf_o, 0, sizeof(struct ustr));
- pr_err("unknown compression code (%d) stri=%s\n",
- cmp_id, ocu_i->u_name);
- return -EINVAL;
- }
-
- 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 */
- 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;
- else if (c < 0x800U) {
- if (utf_o->u_len > (UDF_NAME_LEN - 4))
- break;
- 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 {
- if (utf_o->u_len > (UDF_NAME_LEN - 5))
- break;
- 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));
- }
+ int u_len = 0;
+
+ if (boundlen <= 0)
+ return -ENAMETOOLONG;
+
+ if (uni < 0x80) {
+ out[u_len++] = (unsigned char)uni;
+ } else if (uni < 0x800) {
+ if (boundlen < 2)
+ return -ENAMETOOLONG;
+ out[u_len++] = (unsigned char)(0xc0 | (uni >> 6));
+ out[u_len++] = (unsigned char)(0x80 | (uni & 0x3f));
+ } else {
+ if (boundlen < 3)
+ return -ENAMETOOLONG;
+ out[u_len++] = (unsigned char)(0xe0 | (uni >> 12));
+ out[u_len++] = (unsigned char)(0x80 | ((uni >> 6) & 0x3f));
+ out[u_len++] = (unsigned char)(0x80 | (uni & 0x3f));
}
- utf_o->u_cmpID = 8;
-
- return utf_o->u_len;
+ return u_len;
}
-/*
- *
- * udf_UTF8toCS0
- *
- * PURPOSE
- * Convert UTF-8 to the OSTA Compressed Unicode equivalent.
- *
- * DESCRIPTION
- * This routine is only called by udf_lookup().
- *
- * PRE-CONDITIONS
- * ocu Pointer to OSTA Compressed Unicode output
- * buffer of size UDF_NAME_LEN bytes.
- * utf Pointer to UTF-8 input buffer.
- * utf_len Length of UTF-8 input buffer in bytes.
- *
- * POST-CONDITIONS
- * <return> Zero on success.
- *
- * HISTORY
- * November 12, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-static int udf_UTF8toCS0(dstring *ocu, struct ustr *utf, int length)
+static int udf_char2uni_utf8(const unsigned char *in,
+ int boundlen,
+ wchar_t *uni)
{
- unsigned c, i, max_val, utf_char;
- int utf_cnt, u_len, u_ch;
-
- memset(ocu, 0, sizeof(dstring) * length);
- ocu[0] = 8;
- max_val = 0xffU;
- u_ch = 1;
-
-try_again:
- u_len = 0U;
- utf_char = 0U;
- utf_cnt = 0U;
- for (i = 0U; i < utf->u_len; i++) {
- /* Name didn't fit? */
- if (u_len + 1 + u_ch >= length)
- return 0;
+ unsigned int utf_char;
+ unsigned char c;
+ int utf_cnt, u_len;
- c = (uint8_t)utf->u_name[i];
+ utf_char = 0;
+ utf_cnt = 0;
+ for (u_len = 0; u_len < boundlen;) {
+ c = in[u_len++];
/* Complete a multi-byte UTF-8 character */
if (utf_cnt) {
- utf_char = (utf_char << 6) | (c & 0x3fU);
+ utf_char = (utf_char << 6) | (c & 0x3f);
if (--utf_cnt)
continue;
} else {
/* Check for a multi-byte UTF-8 character */
- if (c & 0x80U) {
+ if (c & 0x80) {
/* Start a multi-byte UTF-8 character */
- if ((c & 0xe0U) == 0xc0U) {
- utf_char = c & 0x1fU;
+ if ((c & 0xe0) == 0xc0) {
+ utf_char = c & 0x1f;
utf_cnt = 1;
- } else if ((c & 0xf0U) == 0xe0U) {
- utf_char = c & 0x0fU;
+ } else if ((c & 0xf0) == 0xe0) {
+ utf_char = c & 0x0f;
utf_cnt = 2;
- } else if ((c & 0xf8U) == 0xf0U) {
- utf_char = c & 0x07U;
+ } else if ((c & 0xf8) == 0xf0) {
+ utf_char = c & 0x07;
utf_cnt = 3;
- } else if ((c & 0xfcU) == 0xf8U) {
- utf_char = c & 0x03U;
+ } else if ((c & 0xfc) == 0xf8) {
+ utf_char = c & 0x03;
utf_cnt = 4;
- } else if ((c & 0xfeU) == 0xfcU) {
- utf_char = c & 0x01U;
+ } else if ((c & 0xfe) == 0xfc) {
+ utf_char = c & 0x01;
utf_cnt = 5;
} else {
- goto error_out;
+ utf_cnt = -1;
+ break;
}
continue;
} else {
@@ -228,97 +101,216 @@ try_again:
utf_char = c;
}
}
-
- /* Choose no compression if necessary */
- if (utf_char > max_val) {
- if (max_val == 0xffU) {
- max_val = 0xffffU;
- ocu[0] = (uint8_t)0x10U;
- u_ch = 2;
- 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);
+ *uni = utf_char;
+ break;
}
-
if (utf_cnt) {
-error_out:
- ocu[++u_len] = '?';
- printk(KERN_DEBUG pr_fmt("bad UTF-8 character\n"));
+ *uni = '?';
+ return -EINVAL;
}
+ return u_len;
+}
- ocu[length - 1] = (uint8_t)u_len + 1;
+#define ILLEGAL_CHAR_MARK '_'
+#define EXT_MARK '.'
+#define CRC_MARK '#'
+#define EXT_SIZE 5
+/* Number of chars we need to store generated CRC to make filename unique */
+#define CRC_LEN 5
- return u_len + 1;
+static int udf_name_conv_char(uint8_t *str_o, int str_o_max_len,
+ int *str_o_idx,
+ const uint8_t *str_i, int str_i_max_len,
+ int *str_i_idx,
+ int u_ch, int *needsCRC,
+ int (*conv_f)(wchar_t, unsigned char *, int),
+ int translate)
+{
+ uint32_t c;
+ int illChar = 0;
+ int len, gotch = 0;
+
+ for (; (!gotch) && (*str_i_idx < str_i_max_len); *str_i_idx += u_ch) {
+ if (*str_o_idx >= str_o_max_len) {
+ *needsCRC = 1;
+ return gotch;
+ }
+
+ /* Expand OSTA compressed Unicode to Unicode */
+ c = str_i[*str_i_idx];
+ if (u_ch > 1)
+ c = (c << 8) | str_i[*str_i_idx + 1];
+
+ if (translate && (c == '/' || c == 0))
+ illChar = 1;
+ else if (illChar)
+ break;
+ else
+ gotch = 1;
+ }
+ if (illChar) {
+ *needsCRC = 1;
+ c = ILLEGAL_CHAR_MARK;
+ gotch = 1;
+ }
+ if (gotch) {
+ len = conv_f(c, &str_o[*str_o_idx], str_o_max_len - *str_o_idx);
+ /* Valid character? */
+ if (len >= 0)
+ *str_o_idx += len;
+ else if (len == -ENAMETOOLONG) {
+ *needsCRC = 1;
+ gotch = 0;
+ } else {
+ str_o[(*str_o_idx)++] = '?';
+ *needsCRC = 1;
+ }
+ }
+ return gotch;
}
-static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,
- const struct ustr *ocu_i)
+static int udf_name_from_CS0(uint8_t *str_o, int str_max_len,
+ const uint8_t *ocu, int ocu_len,
+ int (*conv_f)(wchar_t, unsigned char *, int),
+ int translate)
{
- const uint8_t *ocu;
- uint8_t cmp_id, ocu_len;
- int i, len;
+ uint32_t c;
+ uint8_t cmp_id;
+ int idx, len;
+ int u_ch;
+ int needsCRC = 0;
+ int ext_i_len, ext_max_len;
+ int str_o_len = 0; /* Length of resulting output */
+ int ext_o_len = 0; /* Extension output length */
+ int ext_crc_len = 0; /* Extension output length if used with CRC */
+ int i_ext = -1; /* Extension position in input buffer */
+ int o_crc = 0; /* Rightmost possible output pos for CRC+ext */
+ unsigned short valueCRC;
+ uint8_t ext[EXT_SIZE * NLS_MAX_CHARSET_SIZE + 1];
+ uint8_t crc[CRC_LEN];
+ if (str_max_len <= 0)
+ return 0;
- ocu_len = ocu_i->u_len;
if (ocu_len == 0) {
- memset(utf_o, 0, sizeof(struct ustr));
+ memset(str_o, 0, str_max_len);
return 0;
}
- cmp_id = ocu_i->u_cmpID;
+ cmp_id = ocu[0];
if (cmp_id != 8 && cmp_id != 16) {
- memset(utf_o, 0, sizeof(struct ustr));
- pr_err("unknown compression code (%d) stri=%s\n",
- cmp_id, ocu_i->u_name);
+ memset(str_o, 0, str_max_len);
+ pr_err("unknown compression code (%d)\n", cmp_id);
return -EINVAL;
}
+ u_ch = cmp_id >> 3;
- 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 */
- uint32_t c = ocu[i++];
- if (cmp_id == 16)
- c = (c << 8) | ocu[i++];
+ ocu++;
+ ocu_len--;
- len = nls->uni2char(c, &utf_o->u_name[utf_o->u_len],
- UDF_NAME_LEN - 2 - utf_o->u_len);
- /* Valid character? */
- if (len >= 0)
- utf_o->u_len += len;
- else
- utf_o->u_name[utf_o->u_len++] = '?';
+ if (ocu_len % u_ch) {
+ pr_err("incorrect filename length (%d)\n", ocu_len + 1);
+ return -EINVAL;
}
- utf_o->u_cmpID = 8;
- return utf_o->u_len;
+ if (translate) {
+ /* Look for extension */
+ for (idx = ocu_len - u_ch, ext_i_len = 0;
+ (idx >= 0) && (ext_i_len < EXT_SIZE);
+ idx -= u_ch, ext_i_len++) {
+ c = ocu[idx];
+ if (u_ch > 1)
+ c = (c << 8) | ocu[idx + 1];
+
+ if (c == EXT_MARK) {
+ if (ext_i_len)
+ i_ext = idx;
+ break;
+ }
+ }
+ if (i_ext >= 0) {
+ /* Convert extension */
+ ext_max_len = min_t(int, sizeof(ext), str_max_len);
+ ext[ext_o_len++] = EXT_MARK;
+ idx = i_ext + u_ch;
+ while (udf_name_conv_char(ext, ext_max_len, &ext_o_len,
+ ocu, ocu_len, &idx,
+ u_ch, &needsCRC,
+ conv_f, translate)) {
+ if ((ext_o_len + CRC_LEN) < str_max_len)
+ ext_crc_len = ext_o_len;
+ }
+ }
+ }
+
+ idx = 0;
+ while (1) {
+ if (translate && (idx == i_ext)) {
+ if (str_o_len > (str_max_len - ext_o_len))
+ needsCRC = 1;
+ break;
+ }
+
+ if (!udf_name_conv_char(str_o, str_max_len, &str_o_len,
+ ocu, ocu_len, &idx,
+ u_ch, &needsCRC, conv_f, translate))
+ break;
+
+ if (translate &&
+ (str_o_len <= (str_max_len - ext_o_len - CRC_LEN)))
+ o_crc = str_o_len;
+ }
+
+ if (translate) {
+ if (str_o_len <= 2 && str_o[0] == '.' &&
+ (str_o_len == 1 || str_o[1] == '.'))
+ needsCRC = 1;
+ if (needsCRC) {
+ str_o_len = o_crc;
+ valueCRC = crc_itu_t(0, ocu, ocu_len);
+ crc[0] = CRC_MARK;
+ crc[1] = hex_asc_upper_hi(valueCRC >> 8);
+ crc[2] = hex_asc_upper_lo(valueCRC >> 8);
+ crc[3] = hex_asc_upper_hi(valueCRC);
+ crc[4] = hex_asc_upper_lo(valueCRC);
+ len = min_t(int, CRC_LEN, str_max_len - str_o_len);
+ memcpy(&str_o[str_o_len], crc, len);
+ str_o_len += len;
+ ext_o_len = ext_crc_len;
+ }
+ if (ext_o_len > 0) {
+ memcpy(&str_o[str_o_len], ext, ext_o_len);
+ str_o_len += ext_o_len;
+ }
+ }
+
+ return str_o_len;
}
-static int udf_NLStoCS0(struct nls_table *nls, dstring *ocu, struct ustr *uni,
- int length)
+static int udf_name_to_CS0(uint8_t *ocu, int ocu_max_len,
+ const uint8_t *str_i, int str_len,
+ int (*conv_f)(const unsigned char *, int, wchar_t *))
{
- int len;
- unsigned i, max_val;
- uint16_t uni_char;
+ int i, len;
+ unsigned int max_val;
+ wchar_t uni_char;
int u_len, u_ch;
- memset(ocu, 0, sizeof(dstring) * length);
+ if (ocu_max_len <= 0)
+ return 0;
+
+ memset(ocu, 0, ocu_max_len);
ocu[0] = 8;
- max_val = 0xffU;
+ max_val = 0xff;
u_ch = 1;
try_again:
- u_len = 0U;
- for (i = 0U; i < uni->u_len; i++) {
+ u_len = 1;
+ for (i = 0; i < str_len; i++) {
/* Name didn't fit? */
- if (u_len + 1 + u_ch >= length)
+ if (u_len + u_ch > ocu_max_len)
return 0;
- len = nls->char2uni(&uni->u_name[i], uni->u_len - i, &uni_char);
+ len = conv_f(&str_i[i], str_len - i, &uni_char);
if (!len)
continue;
/* Invalid character, deal with it */
@@ -328,187 +320,77 @@ try_again:
}
if (uni_char > max_val) {
- max_val = 0xffffU;
- ocu[0] = (uint8_t)0x10U;
+ max_val = 0xffff;
+ ocu[0] = 0x10;
u_ch = 2;
goto try_again;
}
- if (max_val == 0xffffU)
- ocu[++u_len] = (uint8_t)(uni_char >> 8);
- ocu[++u_len] = (uint8_t)(uni_char & 0xffU);
+ if (max_val == 0xffff)
+ ocu[u_len++] = (uint8_t)(uni_char >> 8);
+ ocu[u_len++] = (uint8_t)(uni_char & 0xff);
i += len - 1;
}
- ocu[length - 1] = (uint8_t)u_len + 1;
- return u_len + 1;
+ return u_len;
}
-int udf_get_filename(struct super_block *sb, uint8_t *sname, int slen,
+int udf_dstrCS0toUTF8(uint8_t *utf_o, int o_len,
+ const uint8_t *ocu_i, int i_len)
+{
+ int s_len = 0;
+
+ if (i_len > 0) {
+ s_len = ocu_i[i_len - 1];
+ if (s_len >= i_len) {
+ pr_err("incorrect dstring lengths (%d/%d)\n",
+ s_len, i_len);
+ return -EINVAL;
+ }
+ }
+
+ return udf_name_from_CS0(utf_o, o_len, ocu_i, s_len,
+ udf_uni2char_utf8, 0);
+}
+
+int udf_get_filename(struct super_block *sb, const uint8_t *sname, int slen,
uint8_t *dname, int dlen)
{
- struct ustr *filename, *unifilename;
+ int (*conv_f)(wchar_t, unsigned char *, int);
int ret;
if (!slen)
return -EIO;
- filename = kmalloc(sizeof(struct ustr), GFP_NOFS);
- if (!filename)
- return -ENOMEM;
-
- unifilename = kmalloc(sizeof(struct ustr), GFP_NOFS);
- if (!unifilename) {
- ret = -ENOMEM;
- goto out1;
- }
+ if (dlen <= 0)
+ return 0;
- udf_build_ustr_exact(unifilename, sname, slen);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
- ret = udf_CS0toUTF8(filename, unifilename);
- if (ret < 0) {
- udf_debug("Failed in udf_get_filename: sname = %s\n",
- sname);
- goto out2;
- }
+ conv_f = udf_uni2char_utf8;
} else if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP)) {
- ret = udf_CS0toNLS(UDF_SB(sb)->s_nls_map, filename,
- unifilename);
- if (ret < 0) {
- udf_debug("Failed in udf_get_filename: sname = %s\n",
- sname);
- goto out2;
- }
+ conv_f = UDF_SB(sb)->s_nls_map->uni2char;
} else
BUG();
- ret = udf_translate_to_linux(dname, dlen,
- filename->u_name, filename->u_len,
- unifilename->u_name, unifilename->u_len);
+ ret = udf_name_from_CS0(dname, dlen, sname, slen, conv_f, 1);
/* Zero length filename isn't valid... */
if (ret == 0)
ret = -EINVAL;
-out2:
- kfree(unifilename);
-out1:
- kfree(filename);
return ret;
}
-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, int slen,
+ uint8_t *dname, int dlen)
{
- struct ustr unifilename;
- int namelen;
-
- if (!udf_char_to_ustr(&unifilename, sname, flen))
- return 0;
+ int (*conv_f)(const unsigned char *, int, wchar_t *);
if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8)) {
- namelen = udf_UTF8toCS0(dname, &unifilename, UDF_NAME_LEN);
- if (!namelen)
- return 0;
+ conv_f = udf_char2uni_utf8;
} 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;
+ conv_f = UDF_SB(sb)->s_nls_map->char2uni;
} else
- return 0;
+ BUG();
- return namelen;
+ return udf_name_to_CS0(dname, dlen, sname, slen, conv_f);
}
-#define ILLEGAL_CHAR_MARK '_'
-#define EXT_MARK '.'
-#define CRC_MARK '#'
-#define EXT_SIZE 5
-/* Number of chars we need to store generated CRC to make filename unique */
-#define CRC_LEN 5
-
-static int udf_translate_to_linux(uint8_t *newName, int newLen,
- uint8_t *udfName, int udfLen,
- uint8_t *fidName, int fidNameLen)
-{
- int index, newIndex = 0, needsCRC = 0;
- int extIndex = 0, newExtIndex = 0, hasExt = 0;
- unsigned short valueCRC;
- uint8_t curr;
-
- if (udfName[0] == '.' &&
- (udfLen == 1 || (udfLen == 2 && udfName[1] == '.'))) {
- needsCRC = 1;
- newIndex = udfLen;
- memcpy(newName, udfName, udfLen);
- } else {
- for (index = 0; index < udfLen; index++) {
- curr = udfName[index];
- if (curr == '/' || curr == 0) {
- needsCRC = 1;
- curr = ILLEGAL_CHAR_MARK;
- 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)
- hasExt = 0;
- else {
- hasExt = 1;
- extIndex = index;
- newExtIndex = newIndex;
- }
- }
- if (newIndex < newLen)
- newName[newIndex++] = curr;
- else
- needsCRC = 1;
- }
- }
- if (needsCRC) {
- uint8_t ext[EXT_SIZE];
- int localExtIndex = 0;
-
- if (hasExt) {
- int maxFilenameLen;
- 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)))
- index++;
- }
- ext[localExtIndex++] = curr;
- }
- maxFilenameLen = newLen - CRC_LEN - localExtIndex;
- if (newIndex > maxFilenameLen)
- newIndex = maxFilenameLen;
- else
- newIndex = newExtIndex;
- } else if (newIndex > newLen - CRC_LEN)
- newIndex = newLen - CRC_LEN;
- newName[newIndex++] = CRC_MARK;
- valueCRC = crc_itu_t(0, fidName, fidNameLen);
- newName[newIndex++] = hex_asc_upper_hi(valueCRC >> 8);
- newName[newIndex++] = hex_asc_upper_lo(valueCRC >> 8);
- newName[newIndex++] = hex_asc_upper_hi(valueCRC);
- newName[newIndex++] = hex_asc_upper_lo(valueCRC);
-
- if (hasExt) {
- newName[newIndex++] = EXT_MARK;
- for (index = 0; index < localExtIndex; index++)
- newName[newIndex++] = ext[index];
- }
- }
-
- return newIndex;
-}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 21:21:27 +0000