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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 12:09:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-09 12:09:47 -0800
commit55b81e6f2795484ea8edf5805c95c007cacfa736 (patch)
treec3724975107857fcc03b5dd649c462e4f72397be /fs
parent5983faf942f260023e547f3c5f38c1033c35cc9b (diff)
parent08e87d0d773dc9ca5faf4c3306e238ed0ea129b0 (diff)
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (232 commits) USB: Add USB-ID for Multiplex RC serial adapter to cp210x.c xhci: Clean up 32-bit build warnings. USB: update documentation for usbmon usb: usb-storage doesn't support dynamic id currently, the patch disables the feature to fix an oops drivers/usb/class/cdc-acm.c: clear dangling pointer drivers/usb/dwc3/dwc3-pci.c: introduce missing kfree drivers/usb/host/isp1760-if.c: introduce missing kfree usb: option: add ZD Incorporated HSPA modem usb: ch9: fix up MaxStreams helper USB: usb-skeleton.c: cleanup open_count USB: usb-skeleton.c: fix open/disconnect race xhci: Properly handle COMP_2ND_BW_ERR USB: remove dead code from suspend/resume path USB: add quirk for another camera drivers: usb: wusbcore: Fix dependency for USB_WUSB xhci: Better debugging for critical host errors. xhci: Be less verbose during URB cancellation. xhci: Remove debugging about ring structure allocation. xhci: Remove debugging about toggling cycle bits. xhci: Remove debugging for individual transfers. ...
Diffstat (limited to 'fs')
-rw-r--r--fs/fat/namei_vfat.c3
-rw-r--r--fs/nls/nls_base.c73
2 files changed, 50 insertions, 26 deletions
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 3a444b4e236..a81eb2367d3 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -512,7 +512,8 @@ 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 44a88a9fa2c..fea6bd5831d 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -52,7 +52,7 @@ static const struct utf8_table utf8_table[] =
#define SURROGATE_LOW 0x00000400
#define SURROGATE_BITS 0x000003ff
-int utf8_to_utf32(const u8 *s, int len, unicode_t *pu)
+int utf8_to_utf32(const u8 *s, int inlen, unicode_t *pu)
{
unsigned long l;
int c0, c, nc;
@@ -71,7 +71,7 @@ int utf8_to_utf32(const u8 *s, int len, unicode_t *pu)
*pu = (unicode_t) l;
return nc;
}
- if (len <= nc)
+ if (inlen <= nc)
return -1;
s++;
c = (*s ^ 0x80) & 0xFF;
@@ -83,7 +83,7 @@ int utf8_to_utf32(const u8 *s, int len, unicode_t *pu)
}
EXPORT_SYMBOL(utf8_to_utf32);
-int utf32_to_utf8(unicode_t u, u8 *s, int maxlen)
+int utf32_to_utf8(unicode_t u, u8 *s, int maxout)
{
unsigned long l;
int c, nc;
@@ -97,7 +97,7 @@ int utf32_to_utf8(unicode_t u, u8 *s, int maxlen)
return -1;
nc = 0;
- for (t = utf8_table; t->cmask && maxlen; t++, maxlen--) {
+ for (t = utf8_table; t->cmask && maxout; t++, maxout--) {
nc++;
if (l <= t->lmask) {
c = t->shift;
@@ -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 inlen, enum utf16_endian endian,
+ wchar_t *pwcs, int maxout)
{
u16 *op;
int size;
unicode_t u;
op = pwcs;
- while (*s && len > 0) {
+ while (inlen > 0 && maxout > 0 && *s) {
if (*s & 0x80) {
- size = utf8_to_utf32(s, len, &u);
+ size = utf8_to_utf32(s, inlen, &u);
if (size < 0)
return -EINVAL;
+ s += size;
+ inlen -= size;
if (u >= PLANE_SIZE) {
+ if (maxout < 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);
+ maxout -= 2;
} else {
- *op++ = (wchar_t) u;
+ put_utf16(op++, u, endian);
+ maxout--;
}
- s += size;
- len -= size;
} else {
- *op++ = *s++;
- len--;
+ put_utf16(op++, *s++, endian);
+ inlen--;
+ maxout--;
}
}
return op - pwcs;
@@ -160,27 +183,27 @@ static inline unsigned long get_utf16(unsigned c, enum utf16_endian endian)
}
}
-int utf16s_to_utf8s(const wchar_t *pwcs, int len, enum utf16_endian endian,
- u8 *s, int maxlen)
+int utf16s_to_utf8s(const wchar_t *pwcs, int inlen, enum utf16_endian endian,
+ u8 *s, int maxout)
{
u8 *op;
int size;
unsigned long u, v;
op = s;
- while (len > 0 && maxlen > 0) {
+ while (inlen > 0 && maxout > 0) {
u = get_utf16(*pwcs, endian);
if (!u)
break;
pwcs++;
- len--;
+ inlen--;
if (u > 0x7f) {
if ((u & SURROGATE_MASK) == SURROGATE_PAIR) {
if (u & SURROGATE_LOW) {
/* Ignore character and move on */
continue;
}
- if (len <= 0)
+ if (inlen <= 0)
break;
v = get_utf16(*pwcs, endian);
if ((v & SURROGATE_MASK) != SURROGATE_PAIR ||
@@ -191,18 +214,18 @@ int utf16s_to_utf8s(const wchar_t *pwcs, int len, enum utf16_endian endian,
u = PLANE_SIZE + ((u & SURROGATE_BITS) << 10)
+ (v & SURROGATE_BITS);
pwcs++;
- len--;
+ inlen--;
}
- size = utf32_to_utf8(u, op, maxlen);
+ size = utf32_to_utf8(u, op, maxout);
if (size == -1) {
/* Ignore character and move on */
} else {
op += size;
- maxlen -= size;
+ maxout -= size;
}
} else {
*op++ = (u8) u;
- maxlen--;
+ maxout--;
}
}
return op - s;