diff options
Diffstat (limited to '')
| -rw-r--r-- | fs/cifs/cifs_unicode.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c index 5f6e71857be6..fc0fd4fde306 100644 --- a/fs/cifs/cifs_unicode.c +++ b/fs/cifs/cifs_unicode.c @@ -257,3 +257,79 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode, return dst; } +/* + * Convert 16 bit Unicode pathname to wire format from string in current code + * page. Conversion may involve remapping up the six characters that are + * only legal in POSIX-like OS (if they are present in the string). Path + * names are little endian 16 bit Unicode on the wire + */ +int +cifsConvertToUCS(__le16 *target, const char *source, int maxlen, + const struct nls_table *cp, int mapChars) +{ + int i, j, charlen; + int len_remaining = maxlen; + char src_char; + __u16 temp; + + if (!mapChars) + return cifs_strtoUCS(target, source, PATH_MAX, cp); + + for (i = 0, j = 0; i < maxlen; j++) { + src_char = source[i]; + switch (src_char) { + case 0: + put_unaligned_le16(0, &target[j]); + goto ctoUCS_out; + case ':': + temp = UNI_COLON; + break; + case '*': + temp = UNI_ASTERIK; + break; + case '?': + temp = UNI_QUESTION; + break; + case '<': + temp = UNI_LESSTHAN; + break; + case '>': + temp = UNI_GRTRTHAN; + break; + case '|': + temp = UNI_PIPE; + break; + /* + * FIXME: We can not handle remapping backslash (UNI_SLASH) + * until all the calls to build_path_from_dentry are modified, + * as they use backslash as separator. + */ + default: + charlen = cp->char2uni(source+i, len_remaining, + &temp); + /* + * if no match, use question mark, which at least in + * some cases serves as wild card + */ + if (charlen < 1) { + temp = 0x003f; + charlen = 1; + } + len_remaining -= charlen; + /* + * character may take more than one byte in the source + * string, but will take exactly two bytes in the + * target string + */ + i += charlen; + continue; + } + put_unaligned_le16(temp, &target[j]); + i++; /* move to next char in source string */ + len_remaining--; + } + +ctoUCS_out: + return i; +} + |