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9
10#include <linux/types.h>
11#include <linux/nls.h>
12#include "isofs.h"
13
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15
16
17static int
18uni16_to_x8(unsigned char *ascii, __be16 *uni, int len, struct nls_table *nls)
19{
20 __be16 *ip, ch;
21 unsigned char *op;
22
23 ip = uni;
24 op = ascii;
25
26 while ((ch = get_unaligned(ip)) && len) {
27 int llen;
28 llen = nls->uni2char(be16_to_cpu(ch), op, NLS_MAX_CHARSET_SIZE);
29 if (llen > 0)
30 op += llen;
31 else
32 *op++ = '?';
33 ip++;
34
35 len--;
36 }
37 *op = 0;
38 return (op - ascii);
39}
40
41int
42get_joliet_filename(struct iso_directory_record * de, unsigned char *outname, struct inode * inode)
43{
44 struct nls_table *nls;
45 unsigned char len = 0;
46
47 nls = ISOFS_SB(inode->i_sb)->s_nls_iocharset;
48
49 if (!nls) {
50 len = utf16s_to_utf8s((const wchar_t *) de->name,
51 de->name_len[0] >> 1, UTF16_BIG_ENDIAN,
52 outname, PAGE_SIZE);
53 } else {
54 len = uni16_to_x8(outname, (__be16 *) de->name,
55 de->name_len[0] >> 1, nls);
56 }
57 if ((len > 2) && (outname[len-2] == ';') && (outname[len-1] == '1'))
58 len -= 2;
59
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62
63
64 while (len >= 2 && (outname[len-1] == '.'))
65 len--;
66
67 return len;
68}
69