0001
0002
0003
0004
0005
0006
0007
0008
0009
0010 #include <linux/types.h>
0011 #include <linux/nls.h>
0012 #include "isofs.h"
0013
0014
0015
0016
0017 static int
0018 uni16_to_x8(unsigned char *ascii, __be16 *uni, int len, struct nls_table *nls)
0019 {
0020 __be16 *ip, ch;
0021 unsigned char *op;
0022
0023 ip = uni;
0024 op = ascii;
0025
0026 while ((ch = get_unaligned(ip)) && len) {
0027 int llen;
0028 llen = nls->uni2char(be16_to_cpu(ch), op, NLS_MAX_CHARSET_SIZE);
0029 if (llen > 0)
0030 op += llen;
0031 else
0032 *op++ = '?';
0033 ip++;
0034
0035 len--;
0036 }
0037 *op = 0;
0038 return (op - ascii);
0039 }
0040
0041 int
0042 get_joliet_filename(struct iso_directory_record * de, unsigned char *outname, struct inode * inode)
0043 {
0044 struct nls_table *nls;
0045 unsigned char len = 0;
0046
0047 nls = ISOFS_SB(inode->i_sb)->s_nls_iocharset;
0048
0049 if (!nls) {
0050 len = utf16s_to_utf8s((const wchar_t *) de->name,
0051 de->name_len[0] >> 1, UTF16_BIG_ENDIAN,
0052 outname, PAGE_SIZE);
0053 } else {
0054 len = uni16_to_x8(outname, (__be16 *) de->name,
0055 de->name_len[0] >> 1, nls);
0056 }
0057 if ((len > 2) && (outname[len-2] == ';') && (outname[len-1] == '1'))
0058 len -= 2;
0059
0060
0061
0062
0063
0064 while (len >= 2 && (outname[len-1] == '.'))
0065 len--;
0066
0067 return len;
0068 }