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-rw-r--r--fs/ext4/super.c39
-rw-r--r--fs/f2fs/super.c38
-rw-r--r--fs/f2fs/sysfs.c3
-rw-r--r--fs/unicode/Kconfig13
-rw-r--r--fs/unicode/Makefile13
-rw-r--r--fs/unicode/mkutf8data.c24
-rw-r--r--fs/unicode/utf8-core.c109
-rw-r--r--fs/unicode/utf8-norm.c262
-rw-r--r--fs/unicode/utf8-selftest.c94
-rw-r--r--fs/unicode/utf8data.c_shipped (renamed from fs/unicode/utf8data.h_shipped)22
-rw-r--r--fs/unicode/utf8n.h81
-rw-r--r--include/linux/unicode.h49
12 files changed, 291 insertions, 456 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 0343f682504d..db9fe4843529 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1966,29 +1966,22 @@ static const struct mount_opts {
static const struct ext4_sb_encodings {
__u16 magic;
char *name;
- char *version;
+ unsigned int version;
} ext4_sb_encoding_map[] = {
- {EXT4_ENC_UTF8_12_1, "utf8", "12.1.0"},
+ {EXT4_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)},
};
-static int ext4_sb_read_encoding(const struct ext4_super_block *es,
- const struct ext4_sb_encodings **encoding,
- __u16 *flags)
+static const struct ext4_sb_encodings *
+ext4_sb_read_encoding(const struct ext4_super_block *es)
{
__u16 magic = le16_to_cpu(es->s_encoding);
int i;
for (i = 0; i < ARRAY_SIZE(ext4_sb_encoding_map); i++)
if (magic == ext4_sb_encoding_map[i].magic)
- break;
-
- if (i >= ARRAY_SIZE(ext4_sb_encoding_map))
- return -EINVAL;
+ return &ext4_sb_encoding_map[i];
- *encoding = &ext4_sb_encoding_map[i];
- *flags = le16_to_cpu(es->s_encoding_flags);
-
- return 0;
+ return NULL;
}
#endif
@@ -4624,10 +4617,10 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
if (ext4_has_feature_casefold(sb) && !sb->s_encoding) {
const struct ext4_sb_encodings *encoding_info;
struct unicode_map *encoding;
- __u16 encoding_flags;
+ __u16 encoding_flags = le16_to_cpu(es->s_encoding_flags);
- if (ext4_sb_read_encoding(es, &encoding_info,
- &encoding_flags)) {
+ encoding_info = ext4_sb_read_encoding(es);
+ if (!encoding_info) {
ext4_msg(sb, KERN_ERR,
"Encoding requested by superblock is unknown");
goto failed_mount;
@@ -4636,15 +4629,21 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
encoding = utf8_load(encoding_info->version);
if (IS_ERR(encoding)) {
ext4_msg(sb, KERN_ERR,
- "can't mount with superblock charset: %s-%s "
+ "can't mount with superblock charset: %s-%u.%u.%u "
"not supported by the kernel. flags: 0x%x.",
- encoding_info->name, encoding_info->version,
+ encoding_info->name,
+ unicode_major(encoding_info->version),
+ unicode_minor(encoding_info->version),
+ unicode_rev(encoding_info->version),
encoding_flags);
goto failed_mount;
}
ext4_msg(sb, KERN_INFO,"Using encoding defined by superblock: "
- "%s-%s with flags 0x%hx", encoding_info->name,
- encoding_info->version?:"\b", encoding_flags);
+ "%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
+ unicode_major(encoding_info->version),
+ unicode_minor(encoding_info->version),
+ unicode_rev(encoding_info->version),
+ encoding_flags);
sb->s_encoding = encoding;
sb->s_encoding_flags = encoding_flags;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 3bace24f8800..15f12ece0ac6 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -260,29 +260,22 @@ void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...)
static const struct f2fs_sb_encodings {
__u16 magic;
char *name;
- char *version;
+ unsigned int version;
} f2fs_sb_encoding_map[] = {
- {F2FS_ENC_UTF8_12_1, "utf8", "12.1.0"},
+ {F2FS_ENC_UTF8_12_1, "utf8", UNICODE_AGE(12, 1, 0)},
};
-static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb,
- const struct f2fs_sb_encodings **encoding,
- __u16 *flags)
+static const struct f2fs_sb_encodings *
+f2fs_sb_read_encoding(const struct f2fs_super_block *sb)
{
__u16 magic = le16_to_cpu(sb->s_encoding);
int i;
for (i = 0; i < ARRAY_SIZE(f2fs_sb_encoding_map); i++)
if (magic == f2fs_sb_encoding_map[i].magic)
- break;
-
- if (i >= ARRAY_SIZE(f2fs_sb_encoding_map))
- return -EINVAL;
+ return &f2fs_sb_encoding_map[i];
- *encoding = &f2fs_sb_encoding_map[i];
- *flags = le16_to_cpu(sb->s_encoding_flags);
-
- return 0;
+ return NULL;
}
struct kmem_cache *f2fs_cf_name_slab;
@@ -3874,25 +3867,32 @@ static int f2fs_setup_casefold(struct f2fs_sb_info *sbi)
struct unicode_map *encoding;
__u16 encoding_flags;
- if (f2fs_sb_read_encoding(sbi->raw_super, &encoding_info,
- &encoding_flags)) {
+ encoding_info = f2fs_sb_read_encoding(sbi->raw_super);
+ if (!encoding_info) {
f2fs_err(sbi,
"Encoding requested by superblock is unknown");
return -EINVAL;
}
+ encoding_flags = le16_to_cpu(sbi->raw_super->s_encoding_flags);
encoding = utf8_load(encoding_info->version);
if (IS_ERR(encoding)) {
f2fs_err(sbi,
- "can't mount with superblock charset: %s-%s "
+ "can't mount with superblock charset: %s-%u.%u.%u "
"not supported by the kernel. flags: 0x%x.",
- encoding_info->name, encoding_info->version,
+ encoding_info->name,
+ unicode_major(encoding_info->version),
+ unicode_minor(encoding_info->version),
+ unicode_rev(encoding_info->version),
encoding_flags);
return PTR_ERR(encoding);
}
f2fs_info(sbi, "Using encoding defined by superblock: "
- "%s-%s with flags 0x%hx", encoding_info->name,
- encoding_info->version?:"\b", encoding_flags);
+ "%s-%u.%u.%u with flags 0x%hx", encoding_info->name,
+ unicode_major(encoding_info->version),
+ unicode_minor(encoding_info->version),
+ unicode_rev(encoding_info->version),
+ encoding_flags);
sbi->sb->s_encoding = encoding;
sbi->sb->s_encoding_flags = encoding_flags;
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 7d289249cd7e..8408f77764e8 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -196,8 +196,7 @@ static ssize_t encoding_show(struct f2fs_attr *a,
struct super_block *sb = sbi->sb;
if (f2fs_sb_has_casefold(sbi))
- return sysfs_emit(buf, "%s (%d.%d.%d)\n",
- sb->s_encoding->charset,
+ return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
(sb->s_encoding->version >> 16) & 0xff,
(sb->s_encoding->version >> 8) & 0xff,
sb->s_encoding->version & 0xff);
diff --git a/fs/unicode/Kconfig b/fs/unicode/Kconfig
index 2c27b9a5cd6c..610d7bc05d6e 100644
--- a/fs/unicode/Kconfig
+++ b/fs/unicode/Kconfig
@@ -8,7 +8,16 @@ config UNICODE
Say Y here to enable UTF-8 NFD normalization and NFD+CF casefolding
support.
+config UNICODE_UTF8_DATA
+ tristate "UTF-8 normalization and casefolding tables"
+ depends on UNICODE
+ default UNICODE
+ help
+ This contains a large table of case foldings, which can be loaded as
+ a separate module if you say M here. To be on the safe side stick
+ to the default of Y. Saying N here makes no sense, if you do not want
+ utf8 casefolding support, disable CONFIG_UNICODE instead.
+
config UNICODE_NORMALIZATION_SELFTEST
tristate "Test UTF-8 normalization support"
- depends on UNICODE
- default n
+ depends on UNICODE_UTF8_DATA
diff --git a/fs/unicode/Makefile b/fs/unicode/Makefile
index b88aecc86550..2f9d9188852b 100644
--- a/fs/unicode/Makefile
+++ b/fs/unicode/Makefile
@@ -2,14 +2,15 @@
obj-$(CONFIG_UNICODE) += unicode.o
obj-$(CONFIG_UNICODE_NORMALIZATION_SELFTEST) += utf8-selftest.o
+obj-$(CONFIG_UNICODE_UTF8_DATA) += utf8data.o
unicode-y := utf8-norm.o utf8-core.o
-$(obj)/utf8-norm.o: $(obj)/utf8data.h
+$(obj)/utf8-data.o: $(obj)/utf8data.c
-# In the normal build, the checked-in utf8data.h is just shipped.
+# In the normal build, the checked-in utf8data.c is just shipped.
#
-# To generate utf8data.h from UCD, put *.txt files in this directory
+# To generate utf8data.c from UCD, put *.txt files in this directory
# and pass REGENERATE_UTF8DATA=1 from the command line.
ifdef REGENERATE_UTF8DATA
@@ -24,15 +25,15 @@ quiet_cmd_utf8data = GEN $@
-t $(srctree)/$(src)/NormalizationTest.txt \
-o $@
-$(obj)/utf8data.h: $(obj)/mkutf8data $(filter %.txt, $(cmd_utf8data)) FORCE
+$(obj)/utf8data.c: $(obj)/mkutf8data $(filter %.txt, $(cmd_utf8data)) FORCE
$(call if_changed,utf8data)
else
-$(obj)/utf8data.h: $(src)/utf8data.h_shipped FORCE
+$(obj)/utf8data.c: $(src)/utf8data.c_shipped FORCE
$(call if_changed,shipped)
endif
-targets += utf8data.h
+targets += utf8data.c
hostprogs += mkutf8data
diff --git a/fs/unicode/mkutf8data.c b/fs/unicode/mkutf8data.c
index ff2025ac5a32..bc1a7c8b5c8d 100644
--- a/fs/unicode/mkutf8data.c
+++ b/fs/unicode/mkutf8data.c
@@ -3287,12 +3287,10 @@ static void write_file(void)
open_fail(utf8_name, errno);
fprintf(file, "/* This file is generated code, do not edit. */\n");
- fprintf(file, "#ifndef __INCLUDED_FROM_UTF8NORM_C__\n");
- fprintf(file, "#error Only nls_utf8-norm.c should include this file.\n");
- fprintf(file, "#endif\n");
fprintf(file, "\n");
- fprintf(file, "static const unsigned int utf8vers = %#x;\n",
- unicode_maxage);
+ fprintf(file, "#include <linux/module.h>\n");
+ fprintf(file, "#include <linux/kernel.h>\n");
+ fprintf(file, "#include \"utf8n.h\"\n");
fprintf(file, "\n");
fprintf(file, "static const unsigned int utf8agetab[] = {\n");
for (i = 0; i != ages_count; i++)
@@ -3339,6 +3337,22 @@ static void write_file(void)
fprintf(file, "\n");
}
fprintf(file, "};\n");
+ fprintf(file, "\n");
+ fprintf(file, "struct utf8data_table utf8_data_table = {\n");
+ fprintf(file, "\t.utf8agetab = utf8agetab,\n");
+ fprintf(file, "\t.utf8agetab_size = ARRAY_SIZE(utf8agetab),\n");
+ fprintf(file, "\n");
+ fprintf(file, "\t.utf8nfdicfdata = utf8nfdicfdata,\n");
+ fprintf(file, "\t.utf8nfdicfdata_size = ARRAY_SIZE(utf8nfdicfdata),\n");
+ fprintf(file, "\n");
+ fprintf(file, "\t.utf8nfdidata = utf8nfdidata,\n");
+ fprintf(file, "\t.utf8nfdidata_size = ARRAY_SIZE(utf8nfdidata),\n");
+ fprintf(file, "\n");
+ fprintf(file, "\t.utf8data = utf8data,\n");
+ fprintf(file, "};\n");
+ fprintf(file, "EXPORT_SYMBOL_GPL(utf8_data_table);");
+ fprintf(file, "\n");
+ fprintf(file, "MODULE_LICENSE(\"GPL v2\");\n");
fclose(file);
}
diff --git a/fs/unicode/utf8-core.c b/fs/unicode/utf8-core.c
index dc25823bfed9..67aaadc3ab07 100644
--- a/fs/unicode/utf8-core.c
+++ b/fs/unicode/utf8-core.c
@@ -5,16 +5,13 @@
#include <linux/slab.h>
#include <linux/parser.h>
#include <linux/errno.h>
-#include <linux/unicode.h>
#include <linux/stringhash.h>
#include "utf8n.h"
int utf8_validate(const struct unicode_map *um, const struct qstr *str)
{
- const struct utf8data *data = utf8nfdi(um->version);
-
- if (utf8nlen(data, str->name, str->len) < 0)
+ if (utf8nlen(um, UTF8_NFDI, str->name, str->len) < 0)
return -1;
return 0;
}
@@ -23,14 +20,13 @@ EXPORT_SYMBOL(utf8_validate);
int utf8_strncmp(const struct unicode_map *um,
const struct qstr *s1, const struct qstr *s2)
{
- const struct utf8data *data = utf8nfdi(um->version);
struct utf8cursor cur1, cur2;
int c1, c2;
- if (utf8ncursor(&cur1, data, s1->name, s1->len) < 0)
+ if (utf8ncursor(&cur1, um, UTF8_NFDI, s1->name, s1->len) < 0)
return -EINVAL;
- if (utf8ncursor(&cur2, data, s2->name, s2->len) < 0)
+ if (utf8ncursor(&cur2, um, UTF8_NFDI, s2->name, s2->len) < 0)
return -EINVAL;
do {
@@ -50,14 +46,13 @@ EXPORT_SYMBOL(utf8_strncmp);
int utf8_strncasecmp(const struct unicode_map *um,
const struct qstr *s1, const struct qstr *s2)
{
- const struct utf8data *data = utf8nfdicf(um->version);
struct utf8cursor cur1, cur2;
int c1, c2;
- if (utf8ncursor(&cur1, data, s1->name, s1->len) < 0)
+ if (utf8ncursor(&cur1, um, UTF8_NFDICF, s1->name, s1->len) < 0)
return -EINVAL;
- if (utf8ncursor(&cur2, data, s2->name, s2->len) < 0)
+ if (utf8ncursor(&cur2, um, UTF8_NFDICF, s2->name, s2->len) < 0)
return -EINVAL;
do {
@@ -81,12 +76,11 @@ int utf8_strncasecmp_folded(const struct unicode_map *um,
const struct qstr *cf,
const struct qstr *s1)
{
- const struct utf8data *data = utf8nfdicf(um->version);
struct utf8cursor cur1;
int c1, c2;
int i = 0;
- if (utf8ncursor(&cur1, data, s1->name, s1->len) < 0)
+ if (utf8ncursor(&cur1, um, UTF8_NFDICF, s1->name, s1->len) < 0)
return -EINVAL;
do {
@@ -105,11 +99,10 @@ EXPORT_SYMBOL(utf8_strncasecmp_folded);
int utf8_casefold(const struct unicode_map *um, const struct qstr *str,
unsigned char *dest, size_t dlen)
{
- const struct utf8data *data = utf8nfdicf(um->version);
struct utf8cursor cur;
size_t nlen = 0;
- if (utf8ncursor(&cur, data, str->name, str->len) < 0)
+ if (utf8ncursor(&cur, um, UTF8_NFDICF, str->name, str->len) < 0)
return -EINVAL;
for (nlen = 0; nlen < dlen; nlen++) {
@@ -128,12 +121,11 @@ EXPORT_SYMBOL(utf8_casefold);
int utf8_casefold_hash(const struct unicode_map *um, const void *salt,
struct qstr *str)
{
- const struct utf8data *data = utf8nfdicf(um->version);
struct utf8cursor cur;
int c;
unsigned long hash = init_name_hash(salt);
- if (utf8ncursor(&cur, data, str->name, str->len) < 0)
+ if (utf8ncursor(&cur, um, UTF8_NFDICF, str->name, str->len) < 0)
return -EINVAL;
while ((c = utf8byte(&cur))) {
@@ -149,11 +141,10 @@ EXPORT_SYMBOL(utf8_casefold_hash);
int utf8_normalize(const struct unicode_map *um, const struct qstr *str,
unsigned char *dest, size_t dlen)
{
- const struct utf8data *data = utf8nfdi(um->version);
struct utf8cursor cur;
ssize_t nlen = 0;
- if (utf8ncursor(&cur, data, str->name, str->len) < 0)
+ if (utf8ncursor(&cur, um, UTF8_NFDI, str->name, str->len) < 0)
return -EINVAL;
for (nlen = 0; nlen < dlen; nlen++) {
@@ -167,69 +158,59 @@ int utf8_normalize(const struct unicode_map *um, const struct qstr *str,
}
return -EINVAL;
}
-
EXPORT_SYMBOL(utf8_normalize);
-static int utf8_parse_version(const char *version, unsigned int *maj,
- unsigned int *min, unsigned int *rev)
+static const struct utf8data *find_table_version(const struct utf8data *table,
+ size_t nr_entries, unsigned int version)
{
- substring_t args[3];
- char version_string[12];
- static const struct match_token token[] = {
- {1, "%d.%d.%d"},
- {0, NULL}
- };
-
- strncpy(version_string, version, sizeof(version_string));
-
- if (match_token(version_string, token, args) != 1)
- return -EINVAL;
-
- if (match_int(&args[0], maj) || match_int(&args[1], min) ||
- match_int(&args[2], rev))
- return -EINVAL;
+ size_t i = nr_entries - 1;
- return 0;
+ while (version < table[i].maxage)
+ i--;
+ if (version > table[i].maxage)
+ return NULL;
+ return &table[i];
}
-struct unicode_map *utf8_load(const char *version)
+struct unicode_map *utf8_load(unsigned int version)
{
- struct unicode_map *um = NULL;
- int unicode_version;
-
- if (version) {
- unsigned int maj, min, rev;
-
- if (utf8_parse_version(version, &maj, &min, &rev) < 0)
- return ERR_PTR(-EINVAL);
-
- if (!utf8version_is_supported(maj, min, rev))
- return ERR_PTR(-EINVAL);
-
- unicode_version = UNICODE_AGE(maj, min, rev);
- } else {
- unicode_version = utf8version_latest();
- printk(KERN_WARNING"UTF-8 version not specified. "
- "Assuming latest supported version (%d.%d.%d).",
- (unicode_version >> 16) & 0xff,
- (unicode_version >> 8) & 0xff,
- (unicode_version & 0xff));
- }
+ struct unicode_map *um;
um = kzalloc(sizeof(struct unicode_map), GFP_KERNEL);
if (!um)
return ERR_PTR(-ENOMEM);
-
- um->charset = "UTF-8";
- um->version = unicode_version;
-
+ um->version = version;
+
+ um->tables = symbol_request(utf8_data_table);
+ if (!um->tables)
+ goto out_free_um;
+
+ if (!utf8version_is_supported(um, version))
+ goto out_symbol_put;
+ um->ntab[UTF8_NFDI] = find_table_version(um->tables->utf8nfdidata,
+ um->tables->utf8nfdidata_size, um->version);
+ if (!um->ntab[UTF8_NFDI])
+ goto out_symbol_put;
+ um->ntab[UTF8_NFDICF] = find_table_version(um->tables->utf8nfdicfdata,
+ um->tables->utf8nfdicfdata_size, um->version);
+ if (!um->ntab[UTF8_NFDICF])
+ goto out_symbol_put;
return um;
+
+out_symbol_put:
+ symbol_put(um->tables);
+out_free_um:
+ kfree(um);
+ return ERR_PTR(-EINVAL);
}
EXPORT_SYMBOL(utf8_load);
void utf8_unload(struct unicode_map *um)
{
- kfree(um);
+ if (um) {
+ symbol_put(utf8_data_table);
+ kfree(um);
+ }
}
EXPORT_SYMBOL(utf8_unload);
diff --git a/fs/unicode/utf8-norm.c b/fs/unicode/utf8-norm.c
index 1d2d2e5b906a..768f8ab448b8 100644
--- a/fs/unicode/utf8-norm.c
+++ b/fs/unicode/utf8-norm.c
@@ -6,34 +6,17 @@
#include "utf8n.h"
-struct utf8data {
- unsigned int maxage;
- unsigned int offset;
-};
-
-#define __INCLUDED_FROM_UTF8NORM_C__
-#include "utf8data.h"
-#undef __INCLUDED_FROM_UTF8NORM_C__
-
-int utf8version_is_supported(u8 maj, u8 min, u8 rev)
+int utf8version_is_supported(const struct unicode_map *um, unsigned int version)
{
- int i = ARRAY_SIZE(utf8agetab) - 1;
- unsigned int sb_utf8version = UNICODE_AGE(maj, min, rev);
+ int i = um->tables->utf8agetab_size - 1;
- while (i >= 0 && utf8agetab[i] != 0) {
- if (sb_utf8version == utf8agetab[i])
+ while (i >= 0 && um->tables->utf8agetab[i] != 0) {
+ if (version == um->tables->utf8agetab[i])
return 1;
i--;
}
return 0;
}
-EXPORT_SYMBOL(utf8version_is_supported);
-
-int utf8version_latest(void)
-{
- return utf8vers;
-}
-EXPORT_SYMBOL(utf8version_latest);
/*
* UTF-8 valid ranges.
@@ -168,7 +151,7 @@ typedef const unsigned char utf8trie_t;
* underlying datatype: unsigned char.
*
* leaf[0]: The unicode version, stored as a generation number that is
- * an index into utf8agetab[]. With this we can filter code
+ * an index into ->utf8agetab[]. With this we can filter code
* points based on the unicode version in which they were
* defined. The CCC of a non-defined code point is 0.
* leaf[1]: Canonical Combining Class. During normalization, we need
@@ -316,21 +299,19 @@ utf8hangul(const char *str, unsigned char *hangul)
* is well-formed and corresponds to a known unicode code point. The
* shorthand for this will be "is valid UTF-8 unicode".
*/
-static utf8leaf_t *utf8nlookup(const struct utf8data *data,
- unsigned char *hangul, const char *s, size_t len)
+static utf8leaf_t *utf8nlookup(const struct unicode_map *um,
+ enum utf8_normalization n, unsigned char *hangul, const char *s,
+ size_t len)
{
- utf8trie_t *trie = NULL;
+ utf8trie_t *trie = um->tables->utf8data + um->ntab[n]->offset;
int offlen;
int offset;
int mask;
int node;
- if (!data)
- return NULL;
if (len == 0)
return NULL;
- trie = utf8data + data->offset;
node = 1;
while (node) {
offlen = (*trie & OFFLEN) >> OFFLEN_SHIFT;
@@ -392,172 +373,29 @@ static utf8leaf_t *utf8nlookup(const struct utf8data *data,
*
* Forwards to utf8nlookup().
*/
-static utf8leaf_t *utf8lookup(const struct utf8data *data,
- unsigned char *hangul, const char *s)
+static utf8leaf_t *utf8lookup(const struct unicode_map *um,
+ enum utf8_normalization n, unsigned char *hangul, const char *s)
{
- return utf8nlookup(data, hangul, s, (size_t)-1);
-}
-
-/*
- * Maximum age of any character in s.
- * Return -1 if s is not valid UTF-8 unicode.
- * Return 0 if only non-assigned code points are used.
- */
-int utf8agemax(const struct utf8data *data, const char *s)
-{
- utf8leaf_t *leaf;
- int age = 0;
- int leaf_age;
- unsigned char hangul[UTF8HANGULLEAF];
-
- if (!data)
- return -1;
-
- while (*s) {
- leaf = utf8lookup(data, hangul, s);
- if (!leaf)
- return -1;
-
- leaf_age = utf8agetab[LEAF_GEN(leaf)];
- if (leaf_age <= data->maxage && leaf_age > age)
- age = leaf_age;
- s += utf8clen(s);
- }
- return age;
+ return utf8nlookup(um, n, hangul, s, (size_t)-1);
}
-EXPORT_SYMBOL(utf8agemax);
-
-/*
- * Minimum age of any character in s.
- * Return -1 if s is not valid UTF-8 unicode.
- * Return 0 if non-assigned code points are used.
- */
-int utf8agemin(const struct utf8data *data, const char *s)
-{
- utf8leaf_t *leaf;
- int age;
- int leaf_age;
- unsigned char hangul[UTF8HANGULLEAF];
-
- if (!data)
- return -1;
- age = data->maxage;
- while (*s) {
- leaf = utf8lookup(data, hangul, s);
- if (!leaf)
- return -1;
- leaf_age = utf8agetab[LEAF_GEN(leaf)];
- if (leaf_age <= data->maxage && leaf_age < age)
- age = leaf_age;
- s += utf8clen(s);
- }
- return age;
-}
-EXPORT_SYMBOL(utf8agemin);
-
-/*
- * Maximum age of any character in s, touch at most len bytes.
- * Return -1 if s is not valid UTF-8 unicode.
- */
-int utf8nagemax(const struct utf8data *data, const char *s, size_t len)
-{
- utf8leaf_t *leaf;
- int age = 0;
- int leaf_age;
- unsigned char hangul[UTF8HANGULLEAF];
-
- if (!data)
- return -1;
-
- while (len && *s) {
- leaf = utf8nlookup(data, hangul, s, len);
- if (!leaf)
- return -1;
- leaf_age = utf8agetab[LEAF_GEN(leaf)];
- if (leaf_age <= data->maxage && leaf_age > age)
- age = leaf_age;
- len -= utf8clen(s);
- s += utf8clen(s);
- }
- return age;
-}
-EXPORT_SYMBOL(utf8nagemax);
-
-/*
- * Maximum age of any character in s, touch at most len bytes.
- * Return -1 if s is not valid UTF-8 unicode.
- */
-int utf8nagemin(const struct utf8data *data, const char *s, size_t len)
-{
- utf8leaf_t *leaf;
- int leaf_age;
- int age;
- unsigned char hangul[UTF8HANGULLEAF];
-
- if (!data)
- return -1;
- age = data->maxage;
- while (len && *s) {
- leaf = utf8nlookup(data, hangul, s, len);
- if (!leaf)
- return -1;
- leaf_age = utf8agetab[LEAF_GEN(leaf)];
- if (leaf_age <= data->maxage && leaf_age < age)
- age = leaf_age;
- len -= utf8clen(s);
- s += utf8clen(s);
- }
- return age;
-}
-EXPORT_SYMBOL(utf8nagemin);
-
-/*
- * Length of the normalization of s.
- * Return -1 if s is not valid UTF-8 unicode.
- *
- * A string of Default_Ignorable_Code_Point has length 0.
- */
-ssize_t utf8len(const struct utf8data *data, const char *s)
-{
- utf8leaf_t *leaf;
- size_t ret = 0;
- unsigned char hangul[UTF8HANGULLEAF];
-
- if (!data)
- return -1;
- while (*s) {
- leaf = utf8lookup(data, hangul, s);
- if (!leaf)
- return -1;
- if (utf8agetab[LEAF_GEN(leaf)] > data->maxage)
- ret += utf8clen(s);
- else if (LEAF_CCC(leaf) == DECOMPOSE)
- ret += strlen(LEAF_STR(leaf));
- else
- ret += utf8clen(s);
- s += utf8clen(s);
- }
- return ret;
-}
-EXPORT_SYMBOL(utf8len);
/*
* Length of the normalization of s, touch at most len bytes.
* Return -1 if s is not valid UTF-8 unicode.
*/
-ssize_t utf8nlen(const struct utf8data *data, const char *s, size_t len)
+ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,
+ const char *s, size_t len)
{
utf8leaf_t *leaf;
size_t ret = 0;
unsigned char hangul[UTF8HANGULLEAF];
- if (!data)
- return -1;
while (len && *s) {
- leaf = utf8nlookup(data, hangul, s, len);
+ leaf = utf8nlookup(um, n, hangul, s, len);
if (!leaf)
return -1;
- if (utf8agetab[LEAF_GEN(leaf)] > data->maxage)
+ if (um->tables->utf8agetab[LEAF_GEN(leaf)] >
+ um->ntab[n]->maxage)
ret += utf8clen(s);
else if (LEAF_CCC(leaf) == DECOMPOSE)
ret += strlen(LEAF_STR(leaf));
@@ -568,7 +406,6 @@ ssize_t utf8nlen(const struct utf8data *data, const char *s, size_t len)
}
return ret;
}
-EXPORT_SYMBOL(utf8nlen);
/*
* Set up an utf8cursor for use by utf8byte().
@@ -580,14 +417,13 @@ EXPORT_SYMBOL(utf8nlen);
*
* Returns -1 on error, 0 on success.
*/
-int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
- const char *s, size_t len)
+int utf8ncursor(struct utf8cursor *u8c, const struct unicode_map *um,
+ enum utf8_normalization n, const char *s, size_t len)
{
- if (!data)
- return -1;
if (!s)
return -1;
- u8c->data = data;
+ u8c->um = um;
+ u8c->n = n;
u8c->s = s;
u8c->p = NULL;
u8c->ss = NULL;
@@ -604,23 +440,6 @@ int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
return -1;
return 0;
}
-EXPORT_SYMBOL(utf8ncursor);
-
-/*
- * Set up an utf8cursor for use by utf8byte().
- *
- * u8c : pointer to cursor.
- * data : const struct utf8data to use for normalization.
- * s : NUL-terminated string.
- *
- * Returns -1 on error, 0 on success.
- */
-int utf8cursor(struct utf8cursor *u8c, const struct utf8data *data,
- const char *s)
-{
- return utf8ncursor(u8c, data, s, (unsigned int)-1);
-}
-EXPORT_SYMBOL(utf8cursor);
/*
* Get one byte from the normalized form of the string described by u8c.
@@ -678,9 +497,9 @@ int utf8byte(struct utf8cursor *u8c)
/* Look up the data for the current character. */
if (u8c->p) {
- leaf = utf8lookup(u8c->data, u8c->hangul, u8c->s);
+ leaf = utf8lookup(u8c->um, u8c->n, u8c->hangul, u8c->s);
} else {
- leaf = utf8nlookup(u8c->data, u8c->hangul,
+ leaf = utf8nlookup(u8c->um, u8c->n, u8c->hangul,
u8c->s, u8c->len);
}
@@ -690,7 +509,8 @@ int utf8byte(struct utf8cursor *u8c)
ccc = LEAF_CCC(leaf);
/* Characters that are too new have CCC 0. */
- if (utf8agetab[LEAF_GEN(leaf)] > u8c->data->maxage) {
+ if (u8c->um->tables->utf8agetab[LEAF_GEN(leaf)] >
+ u8c->um->ntab[u8c->n]->maxage) {
ccc = STOPPER;
} else if (ccc == DECOMPOSE) {
u8c->len -= utf8clen(u8c->s);
@@ -704,7 +524,7 @@ int utf8byte(struct utf8cursor *u8c)
goto ccc_mismatch;
}
- leaf = utf8lookup(u8c->data, u8c->hangul, u8c->s);
+ leaf = utf8lookup(u8c->um, u8c->n, u8c->hangul, u8c->s);
if (!leaf)
return -1;
ccc = LEAF_CCC(leaf);
@@ -765,28 +585,10 @@ ccc_mismatch:
}
}
}
-EXPORT_SYMBOL(utf8byte);
-
-const struct utf8data *utf8nfdi(unsigned int maxage)
-{
- int i = ARRAY_SIZE(utf8nfdidata) - 1;
-
- while (maxage < utf8nfdidata[i].maxage)
- i--;
- if (maxage > utf8nfdidata[i].maxage)
- return NULL;
- return &utf8nfdidata[i];
-}
-EXPORT_SYMBOL(utf8nfdi);
-
-const struct utf8data *utf8nfdicf(unsigned int maxage)
-{
- int i = ARRAY_SIZE(utf8nfdicfdata) - 1;
- while (maxage < utf8nfdicfdata[i].maxage)
- i--;
- if (maxage > utf8nfdicfdata[i].maxage)
- return NULL;
- return &utf8nfdicfdata[i];
-}
-EXPORT_SYMBOL(utf8nfdicf);
+#ifdef CONFIG_UNICODE_NORMALIZATION_SELFTEST_MODULE
+EXPORT_SYMBOL_GPL(utf8version_is_supported);
+EXPORT_SYMBOL_GPL(utf8nlen);
+EXPORT_SYMBOL_GPL(utf8ncursor);
+EXPORT_SYMBOL_GPL(utf8byte);
+#endif
diff --git a/fs/unicode/utf8-selftest.c b/fs/unicode/utf8-selftest.c
index 6fe8af7edccb..eb2bbdd688d7 100644
--- a/fs/unicode/utf8-selftest.c
+++ b/fs/unicode/utf8-selftest.c
@@ -18,9 +18,7 @@ unsigned int failed_tests;
unsigned int total_tests;
/* Tests will be based on this version. */
-#define latest_maj 12
-#define latest_min 1
-#define latest_rev 0
+#define UTF8_LATEST UNICODE_AGE(12, 1, 0)
#define _test(cond, func, line, fmt, ...) do { \
total_tests++; \
@@ -160,18 +158,22 @@ static const struct {
}
};
-static void check_utf8_nfdi(void)
+static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n,
+ const char *s)
+{
+ return utf8nlen(um, n, s, (size_t)-1);
+}
+
+static int utf8cursor(struct utf8cursor *u8c, const struct unicode_map *um,
+ enum utf8_normalization n, const char *s)
+{
+ return utf8ncursor(u8c, um, n, s, (unsigned int)-1);
+}
+
+static void check_utf8_nfdi(struct unicode_map *um)
{
int i;
struct utf8cursor u8c;
- const struct utf8data *data;
-
- data = utf8nfdi(UNICODE_AGE(latest_maj, latest_min, latest_rev));
- if (!data) {
- pr_err("%s: Unable to load utf8-%d.%d.%d. Skipping.\n",
- __func__, latest_maj, latest_min, latest_rev);
- return;
- }
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
int len = strlen(nfdi_test_data[i].str);
@@ -179,10 +181,11 @@ static void check_utf8_nfdi(void)
int j = 0;
unsigned char c;
- test((utf8len(data, nfdi_test_data[i].str) == nlen));
- test((utf8nlen(data, nfdi_test_data[i].str, len) == nlen));
+ test((utf8len(um, UTF8_NFDI, nfdi_test_data[i].str) == nlen));
+ test((utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len) ==
+ nlen));
- if (utf8cursor(&u8c, data, nfdi_test_data[i].str) < 0)
+ if (utf8cursor(&u8c, um, UTF8_NFDI, nfdi_test_data[i].str) < 0)
pr_err("can't create cursor\n");
while ((c = utf8byte(&u8c)) > 0) {
@@ -196,18 +199,10 @@ static void check_utf8_nfdi(void)
}
}
-static void check_utf8_nfdicf(void)
+static void check_utf8_nfdicf(struct unicode_map *um)
{
int i;
struct utf8cursor u8c;
- const struct utf8data *data;
-
- data = utf8nfdicf(UNICODE_AGE(latest_maj, latest_min, latest_rev));
- if (!data) {
- pr_err("%s: Unable to load utf8-%d.%d.%d. Skipping.\n",
- __func__, latest_maj, latest_min, latest_rev);
- return;
- }
for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
int len = strlen(nfdicf_test_data[i].str);
@@ -215,10 +210,13 @@ static void check_utf8_nfdicf(void)
int j = 0;
unsigned char c;
- test((utf8len(data, nfdicf_test_data[i].str) == nlen));
- test((utf8nlen(data, nfdicf_test_data[i].str, len) == nlen));
+ test((utf8len(um, UTF8_NFDICF, nfdicf_test_data[i].str) ==
+ nlen));
+ test((utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len) ==
+ nlen));
- if (utf8cursor(&u8c, data, nfdicf_test_data[i].str) < 0)
+ if (utf8cursor(&u8c, um, UTF8_NFDICF,
+ nfdicf_test_data[i].str) < 0)
pr_err("can't create cursor\n");
while ((c = utf8byte(&u8c)) > 0) {
@@ -232,16 +230,9 @@ static void check_utf8_nfdicf(void)
}
}
-static void check_utf8_comparisons(void)
+static void check_utf8_comparisons(struct unicode_map *table)
{
int i;
- struct unicode_map *table = utf8_load("12.1.0");
-
- if (IS_ERR(table)) {
- pr_err("%s: Unable to load utf8 %d.%d.%d. Skipping.\n",
- __func__, latest_maj, latest_min, latest_rev);
- return;
- }
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
const struct qstr s1 = {.name = nfdi_test_data[i].str,
@@ -262,42 +253,49 @@ static void check_utf8_comparisons(void)
test_f(!utf8_strncasecmp(table, &s1, &s2),
"%s %s comparison mismatch\n", s1.name, s2.name);
}
-
- utf8_unload(table);
}
-static void check_supported_versions(void)
+static void check_supported_versions(struct unicode_map *um)
{
/* Unicode 7.0.0 should be supported. */
- test(utf8version_is_supported(7, 0, 0));
+ test(utf8version_is_supported(um, UNICODE_AGE(7, 0, 0)));
/* Unicode 9.0.0 should be supported. */
- test(utf8version_is_supported(9, 0, 0));
+ test(utf8version_is_supported(um, UNICODE_AGE(9, 0, 0)));
/* Unicode 1x.0.0 (the latest version) should be supported. */
- test(utf8version_is_supported(latest_maj, latest_min, latest_rev));
+ test(utf8version_is_supported(um, UTF8_LATEST));
/* Next versions don't exist. */
- test(!utf8version_is_supported(13, 0, 0));
- test(!utf8version_is_supported(0, 0, 0));
- test(!utf8version_is_supported(-1, -1, -1));
+ test(!utf8version_is_supported(um, UNICODE_AGE(13, 0, 0)));
+ test(!utf8version_is_supported(um, UNICODE_AGE(0, 0, 0)));
+ test(!utf8version_is_supported(um, UNICODE_AGE(-1, -1, -1)));
}
static int __init init_test_ucd(void)
{
+ struct unicode_map *um;
+
failed_tests = 0;
total_tests = 0;
- check_supported_versions();
- check_utf8_nfdi();
- check_utf8_nfdicf();
- check_utf8_comparisons();
+ um = utf8_load(UTF8_LATEST);
+ if (IS_ERR(um)) {
+ pr_err("%s: Unable to load utf8 table.\n", __func__);
+ return PTR_ERR(um);
+ }
+
+ check_supported_versions(um);
+ check_utf8_nfdi(um);
+ check_utf8_nfdicf(um);
+ check_utf8_comparisons(um);
if (!failed_tests)
pr_info("All %u tests passed\n", total_tests);
else
pr_err("%u out of %u tests failed\n", failed_tests,
total_tests);
+ utf8_unload(um);
return 0;
}
diff --git a/fs/unicode/utf8data.h_shipped b/fs/unicode/utf8data.c_shipped
index 76e4f0e1b089..d9b62901aa96 100644
--- a/fs/unicode/utf8data.h_shipped
+++ b/fs/unicode/utf8data.c_shipped
@@ -1,9 +1,8 @@
/* This file is generated code, do not edit. */
-#ifndef __INCLUDED_FROM_UTF8NORM_C__
-#error Only nls_utf8-norm.c should include this file.
-#endif
-static const unsigned int utf8vers = 0xc0100;
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include "utf8n.h"
static const unsigned int utf8agetab[] = {
0,
@@ -4107,3 +4106,18 @@ static const unsigned char utf8data[64256] = {
0x52,0x04,0x00,0x00,0x11,0x04,0x00,0x00,0x02,0x00,0xcf,0x86,0xcf,0x06,0x02,0x00,
0x81,0x80,0xcf,0x86,0x85,0x84,0xcf,0x86,0xcf,0x06,0x02,0x00,0x00,0x00,0x00,0x00
};
+
+struct utf8data_table utf8_data_table = {
+ .utf8agetab = utf8agetab,
+ .utf8agetab_size = ARRAY_SIZE(utf8agetab),
+
+ .utf8nfdicfdata = utf8nfdicfdata,
+ .utf8nfdicfdata_size = ARRAY_SIZE(utf8nfdicfdata),
+
+ .utf8nfdidata = utf8nfdidata,
+ .utf8nfdidata_size = ARRAY_SIZE(utf8nfdidata),
+
+ .utf8data = utf8data,
+};
+EXPORT_SYMBOL_GPL(utf8_data_table);
+MODULE_LICENSE("GPL v2");
diff --git a/fs/unicode/utf8n.h b/fs/unicode/utf8n.h
index 0acd530c2c79..bd00d587747a 100644
--- a/fs/unicode/utf8n.h
+++ b/fs/unicode/utf8n.h
@@ -11,53 +11,9 @@
#include <linux/export.h>
#include <linux/string.h>
#include <linux/module.h>
+#include <linux/unicode.h>
-/* Encoding a unicode version number as a single unsigned int. */
-#define UNICODE_MAJ_SHIFT (16)
-#define UNICODE_MIN_SHIFT (8)
-
-#define UNICODE_AGE(MAJ, MIN, REV) \
- (((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) | \
- ((unsigned int)(MIN) << UNICODE_MIN_SHIFT) | \
- ((unsigned int)(REV)))
-
-/* Highest unicode version supported by the data tables. */
-extern int utf8version_is_supported(u8 maj, u8 min, u8 rev);
-extern int utf8version_latest(void);
-
-/*
- * Look for the correct const struct utf8data for a unicode version.
- * Returns NULL if the version requested is too new.
- *
- * Two normalization forms are supported: nfdi and nfdicf.
- *
- * nfdi:
- * - Apply unicode normalization form NFD.
- * - Remove any Default_Ignorable_Code_Point.
- *
- * nfdicf:
- * - Apply unicode normalization form NFD.
- * - Remove any Default_Ignorable_Code_Point.
- * - Apply a full casefold (C + F).
- */
-extern const struct utf8data *utf8nfdi(unsigned int maxage);
-extern const struct utf8data *utf8nfdicf(unsigned int maxage);
-
-/*
- * Determine the maximum age of any unicode character in the string.
- * Returns 0 if only unassigned code points are present.
- * Returns -1 if the input is not valid UTF-8.
- */
-extern int utf8agemax(const struct utf8data *data, const char *s);
-extern int utf8nagemax(const struct utf8data *data, const char *s, size_t len);
-
-/*
- * Determine the minimum age of any unicode character in the string.
- * Returns 0 if any unassigned code points are present.
- * Returns -1 if the input is not valid UTF-8.
- */
-extern int utf8agemin(const struct utf8data *data, const char *s);
-extern int utf8nagemin(const struct utf8data *data, const char *s, size_t len);
+int utf8version_is_supported(const struct unicode_map *um, unsigned int version);
/*
* Determine the length of the normalized from of the string,
@@ -65,8 +21,8 @@ extern int utf8nagemin(const struct utf8data *data, const char *s, size_t len);
* Returns 0 if only ignorable code points are present.
* Returns -1 if the input is not valid UTF-8.
*/
-extern ssize_t utf8len(const struct utf8data *data, const char *s);
-extern ssize_t utf8nlen(const struct utf8data *data, const char *s, size_t len);
+ssize_t utf8nlen(const struct unicode_map *um, enum utf8_normalization n,
+ const char *s, size_t len);
/* Needed in struct utf8cursor below. */
#define UTF8HANGULLEAF (12)
@@ -75,7 +31,8 @@ extern ssize_t utf8nlen(const struct utf8data *data, const char *s, size_t len);
* Cursor structure used by the normalizer.
*/
struct utf8cursor {
- const struct utf8data *data;
+ const struct unicode_map *um;
+ enum utf8_normalization n;
const char *s;
const char *p;
const char *ss;
@@ -92,10 +49,8 @@ struct utf8cursor {
* Returns 0 on success.
* Returns -1 on failure.
*/
-extern int utf8cursor(struct utf8cursor *u8c, const struct utf8data *data,
- const char *s);
-extern int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
- const char *s, size_t len);
+int utf8ncursor(struct utf8cursor *u8c, const struct unicode_map *um,
+ enum utf8_normalization n, const char *s, size_t len);
/*
* Get the next byte in the normalization.
@@ -105,4 +60,24 @@ extern int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
*/
extern int utf8byte(struct utf8cursor *u8c);
+struct utf8data {
+ unsigned int maxage;
+ unsigned int offset;
+};
+
+struct utf8data_table {
+ const unsigned int *utf8agetab;
+ int utf8agetab_size;
+
+ const struct utf8data *utf8nfdicfdata;
+ int utf8nfdicfdata_size;
+
+ const struct utf8data *utf8nfdidata;
+ int utf8nfdidata_size;
+
+ const unsigned char *utf8data;
+};
+
+extern struct utf8data_table utf8_data_table;
+
#endif /* UTF8NORM_H */
diff --git a/include/linux/unicode.h b/include/linux/unicode.h
index 74484d44c755..4d39e6e11a95 100644
--- a/include/linux/unicode.h
+++ b/include/linux/unicode.h
@@ -5,9 +5,52 @@
#include <linux/init.h>
#include <linux/dcache.h>
+struct utf8data;
+struct utf8data_table;
+
+#define UNICODE_MAJ_SHIFT 16
+#define UNICODE_MIN_SHIFT 8
+
+#define UNICODE_AGE(MAJ, MIN, REV) \
+ (((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) | \
+ ((unsigned int)(MIN) << UNICODE_MIN_SHIFT) | \
+ ((unsigned int)(REV)))
+
+static inline u8 unicode_major(unsigned int age)
+{
+ return (age >> UNICODE_MAJ_SHIFT) & 0xff;
+}
+
+static inline u8 unicode_minor(unsigned int age)
+{
+ return (age >> UNICODE_MIN_SHIFT) & 0xff;
+}
+
+static inline u8 unicode_rev(unsigned int age)
+{
+ return age & 0xff;
+}
+
+/*
+ * Two normalization forms are supported:
+ * 1) NFDI
+ * - Apply unicode normalization form NFD.
+ * - Remove any Default_Ignorable_Code_Point.
+ * 2) NFDICF
+ * - Apply unicode normalization form NFD.
+ * - Remove any Default_Ignorable_Code_Point.
+ * - Apply a full casefold (C + F).
+ */
+enum utf8_normalization {
+ UTF8_NFDI = 0,
+ UTF8_NFDICF,
+ UTF8_NMAX,
+};
+
struct unicode_map {
- const char *charset;
- int version;
+ unsigned int version;
+ const struct utf8data *ntab[UTF8_NMAX];
+ const struct utf8data_table *tables;
};
int utf8_validate(const struct unicode_map *um, const struct qstr *str);
@@ -30,7 +73,7 @@ int utf8_casefold(const struct unicode_map *um, const struct qstr *str,
int utf8_casefold_hash(const struct unicode_map *um, const void *salt,
struct qstr *str);
-struct unicode_map *utf8_load(const char *version);
+struct unicode_map *utf8_load(unsigned int version);
void utf8_unload(struct unicode_map *um);
#endif /* _LINUX_UNICODE_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 17:42:16 +0000