1 /* SPDX-License-Identifier: GPL-2.0 */
14 	if (utf8nlen(um, UTF8_NFDI, str->name, str->len) < 0)  in utf8_validate()
15 		return -1;  in utf8_validate()
26 	if (utf8ncursor(&cur1, um, UTF8_NFDI, s1->name, s1->len) < 0)  in utf8_strncmp()
27 		return -EINVAL;  in utf8_strncmp()
29 	if (utf8ncursor(&cur2, um, UTF8_NFDI, s2->name, s2->len) < 0)  in utf8_strncmp()
30 		return -EINVAL;  in utf8_strncmp()
37 			return -EINVAL;  in utf8_strncmp()
52 	if (utf8ncursor(&cur1, um, UTF8_NFDICF, s1->name, s1->len) < 0)  in utf8_strncasecmp()
53 		return -EINVAL;  in utf8_strncasecmp()
55 	if (utf8ncursor(&cur2, um, UTF8_NFDICF, s2->name, s2->len) < 0)  in utf8_strncasecmp()
56 		return -EINVAL;  in utf8_strncasecmp()
63 			return -EINVAL;  in utf8_strncasecmp()
72 /* String cf is expected to be a valid UTF-8 casefolded
83 	if (utf8ncursor(&cur1, um, UTF8_NFDICF, s1->name, s1->len) < 0)  in utf8_strncasecmp_folded()
84 		return -EINVAL;  in utf8_strncasecmp_folded()
88 		c2 = cf->name[i++];  in utf8_strncasecmp_folded()
90 			return -EINVAL;  in utf8_strncasecmp_folded()
105 	if (utf8ncursor(&cur, um, UTF8_NFDICF, str->name, str->len) < 0)  in utf8_casefold()
106 		return -EINVAL;  in utf8_casefold()
109 		int c = utf8byte(&cur);  in utf8_casefold()  local
111 		dest[nlen] = c;  in utf8_casefold()
112 		if (!c)  in utf8_casefold()
114 		if (c == -1)  in utf8_casefold()
117 	return -EINVAL;  in utf8_casefold()
125 	int c;  in utf8_casefold_hash()  local
128 	if (utf8ncursor(&cur, um, UTF8_NFDICF, str->name, str->len) < 0)  in utf8_casefold_hash()
129 		return -EINVAL;  in utf8_casefold_hash()
131 	while ((c = utf8byte(&cur))) {  in utf8_casefold_hash()
132 		if (c < 0)  in utf8_casefold_hash()
133 			return -EINVAL;  in utf8_casefold_hash()
134 		hash = partial_name_hash((unsigned char)c, hash);  in utf8_casefold_hash()
136 	str->hash = end_name_hash(hash);  in utf8_casefold_hash()
147 	if (utf8ncursor(&cur, um, UTF8_NFDI, str->name, str->len) < 0)  in utf8_normalize()
148 		return -EINVAL;  in utf8_normalize()
151 		int c = utf8byte(&cur);  in utf8_normalize()  local
153 		dest[nlen] = c;  in utf8_normalize()
154 		if (!c)  in utf8_normalize()
156 		if (c == -1)  in utf8_normalize()
159 	return -EINVAL;  in utf8_normalize()
164 		size_t nr_entries, unsigned int version)  in find_table_version()  argument
166 	size_t i = nr_entries - 1;  in find_table_version()
168 	while (version < table[i].maxage)  in find_table_version()
169 		i--;  in find_table_version()
170 	if (version > table[i].maxage)  in find_table_version()
175 struct unicode_map *utf8_load(unsigned int version)  in utf8_load()  argument
181 		return ERR_PTR(-ENOMEM);  in utf8_load()
182 	um->version = version;  in utf8_load()
184 	um->tables = symbol_request(utf8_data_table);  in utf8_load()
185 	if (!um->tables)  in utf8_load()
188 	if (!utf8version_is_supported(um, version))  in utf8_load()
190 	um->ntab[UTF8_NFDI] = find_table_version(um->tables->utf8nfdidata,  in utf8_load()
191 			um->tables->utf8nfdidata_size, um->version);  in utf8_load()
192 	if (!um->ntab[UTF8_NFDI])  in utf8_load()
194 	um->ntab[UTF8_NFDICF] = find_table_version(um->tables->utf8nfdicfdata,  in utf8_load()
195 			um->tables->utf8nfdicfdata_size, um->version);  in utf8_load()
196 	if (!um->ntab[UTF8_NFDICF])  in utf8_load()
204 	return ERR_PTR(-EINVAL);  in utf8_load()
218  * utf8_parse_version - Parse a UTF-8 version number from a string
220  * @version: input string
222  * Returns the parsed version on success, negative code on error
224 int utf8_parse_version(char *version)  in utf8_parse_version()  argument
233 	if (match_token(version, token, args) != 1)  in utf8_parse_version()
234 		return -EINVAL;  in utf8_parse_version()
238 		return -EINVAL;  in utf8_parse_version()