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| author | sakindia123 <sa6915@gmail.com> | 2013-06-14 05:02:38 +0100 |
|---|---|---|
| committer | sakindia123 <sa6915@gmail.com> | 2013-06-14 05:02:38 +0100 |
| commit | 83e756cbc3fc1689d40567b71511adc1089f85e0 (patch) | |
| tree | 0d223e10f94cf10500d570e50a5296660bff0793 /fs | |
| parent | e25020d0b5430c86778e3c2bf3e5050e96db0d77 (diff) | |
| download | kernel_samsung_smdk4412-83e756cbc3fc1689d40567b71511adc1089f85e0.zip kernel_samsung_smdk4412-83e756cbc3fc1689d40567b71511adc1089f85e0.tar.gz kernel_samsung_smdk4412-83e756cbc3fc1689d40567b71511adc1089f85e0.tar.bz2 | |
Samsung i9300 Update 10
Change-Id: I549efadb9464c7f0e4248c31f1f8bff55ffed458
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fat/namei_vfat.c | 3 | ||||
| -rw-r--r-- | fs/nls/nls_base.c | 43 |
2 files changed, 35 insertions, 11 deletions
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 20b4ea5..6ee3c36 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -514,7 +514,8 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname, int charlen; if (utf8) { - *outlen = utf8s_to_utf16s(name, len, (wchar_t *)outname); + *outlen = utf8s_to_utf16s(name, len, UTF16_HOST_ENDIAN, + (wchar_t *) outname, FAT_LFN_LEN + 2); if (*outlen < 0) return *outlen; else if (*outlen > FAT_LFN_LEN) diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c index 44a88a9..0eb059e 100644 --- a/fs/nls/nls_base.c +++ b/fs/nls/nls_base.c @@ -114,34 +114,57 @@ int utf32_to_utf8(unicode_t u, u8 *s, int maxlen) } EXPORT_SYMBOL(utf32_to_utf8); -int utf8s_to_utf16s(const u8 *s, int len, wchar_t *pwcs) +static inline void put_utf16(wchar_t *s, unsigned c, enum utf16_endian endian) +{ + switch (endian) { + default: + *s = (wchar_t) c; + break; + case UTF16_LITTLE_ENDIAN: + *s = __cpu_to_le16(c); + break; + case UTF16_BIG_ENDIAN: + *s = __cpu_to_be16(c); + break; + } +} + +int utf8s_to_utf16s(const u8 *s, int len, enum utf16_endian endian, + wchar_t *pwcs, int maxlen) { u16 *op; int size; unicode_t u; op = pwcs; - while (*s && len > 0) { + while (len > 0 && maxlen > 0 && *s) { if (*s & 0x80) { size = utf8_to_utf32(s, len, &u); if (size < 0) return -EINVAL; + s += size; + len -= size; if (u >= PLANE_SIZE) { + if (maxlen < 2) + break; u -= PLANE_SIZE; - *op++ = (wchar_t) (SURROGATE_PAIR | - ((u >> 10) & SURROGATE_BITS)); - *op++ = (wchar_t) (SURROGATE_PAIR | + put_utf16(op++, SURROGATE_PAIR | + ((u >> 10) & SURROGATE_BITS), + endian); + put_utf16(op++, SURROGATE_PAIR | SURROGATE_LOW | - (u & SURROGATE_BITS)); + (u & SURROGATE_BITS), + endian); + maxlen -= 2; } else { - *op++ = (wchar_t) u; + put_utf16(op++, u, endian); + maxlen--; } - s += size; - len -= size; } else { - *op++ = *s++; + put_utf16(op++, *s++, endian); len--; + maxlen--; } } return op - pwcs; |