CIFS: Rename *UCS* functions to *UTF16*

to reflect the unicode encoding used by CIFS protocol.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Acked-by: Jeff Layton <jlayton@samba.org>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>

fs/cifs/cifs_unicode.c

@@ -27,17 +27,17 @@
 #include "cifs_debug.h"
 
 /*
- * cifs_ucs2_bytes - how long will a string be after conversion?
- * @ucs - pointer to input string
+ * cifs_utf16_bytes - how long will a string be after conversion?
+ * @utf16 - pointer to input string
  * @maxbytes - don't go past this many bytes of input string
  * @codepage - destination codepage
  *
- * Walk a ucs2le string and return the number of bytes that the string will
+ * Walk a utf16le string and return the number of bytes that the string will
  * be after being converted to the given charset, not including any null
  * termination required. Don't walk past maxbytes in the source buffer.
  */
 int
-cifs_ucs2_bytes(const __le16 *from, int maxbytes,
+cifs_utf16_bytes(const __le16 *from, int maxbytes,
 		const struct nls_table *codepage)
 {
 	int i;
@@ -122,7 +122,7 @@ cifs_mapchar(char *target, const __u16 src_char, const struct nls_table *cp,
 }
 
 /*
- * cifs_from_ucs2 - convert utf16le string to local charset
+ * cifs_from_utf16 - convert utf16le string to local charset
  * @to - destination buffer
  * @from - source buffer
  * @tolen - destination buffer size (in bytes)
@@ -130,7 +130,7 @@ cifs_mapchar(char *target, const __u16 src_char, const struct nls_table *cp,
  * @codepage - codepage to which characters should be converted
  * @mapchar - should characters be remapped according to the mapchars option?
  *
- * Convert a little-endian ucs2le string (as sent by the server) to a string
+ * Convert a little-endian utf16le string (as sent by the server) to a string
  * in the provided codepage. The tolen and fromlen parameters are to ensure
  * that the code doesn't walk off of the end of the buffer (which is always
  * a danger if the alignment of the source buffer is off). The destination
@@ -139,12 +139,12 @@ cifs_mapchar(char *target, const __u16 src_char, const struct nls_table *cp,
  * null terminator).
  *
  * Note that some windows versions actually send multiword UTF-16 characters
- * instead of straight UCS-2. The linux nls routines however aren't able to
+ * instead of straight UTF16-2. The linux nls routines however aren't able to
  * deal with those characters properly. In the event that we get some of
  * those characters, they won't be translated properly.
  */
 int
-cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
+cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
 		 const struct nls_table *codepage, bool mapchar)
 {
 	int i, charlen, safelen;
@@ -190,13 +190,13 @@ cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
 }
 
 /*
- * NAME:	cifs_strtoUCS()
+ * NAME:	cifs_strtoUTF16()
  *
  * FUNCTION:	Convert character string to unicode string
  *
  */
 int
-cifs_strtoUCS(__le16 *to, const char *from, int len,
+cifs_strtoUTF16(__le16 *to, const char *from, int len,
 	      const struct nls_table *codepage)
 {
 	int charlen;
@@ -206,7 +206,7 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
 	for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
 		charlen = codepage->char2uni(from, len, &wchar_to);
 		if (charlen < 1) {
-			cERROR(1, "strtoUCS: char2uni of 0x%x returned %d",
+			cERROR(1, "strtoUTF16: char2uni of 0x%x returned %d",
 				*from, charlen);
 			/* A question mark */
 			wchar_to = 0x003f;
@@ -220,7 +220,8 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
 }
 
 /*
- * cifs_strndup_from_ucs - copy a string from wire format to the local codepage
+ * cifs_strndup_from_utf16 - copy a string from wire format to the local
+ * codepage
  * @src - source string
  * @maxlen - don't walk past this many bytes in the source string
  * @is_unicode - is this a unicode string?
@@ -231,19 +232,19 @@ cifs_strtoUCS(__le16 *to, const char *from, int len,
  * error.
  */
 char *
-cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
-	     const struct nls_table *codepage)
+cifs_strndup_from_utf16(const char *src, const int maxlen,
+			const bool is_unicode, const struct nls_table *codepage)
 {
 	int len;
 	char *dst;
 
 	if (is_unicode) {
-		len = cifs_ucs2_bytes((__le16 *) src, maxlen, codepage);
+		len = cifs_utf16_bytes((__le16 *) src, maxlen, codepage);
 		len += nls_nullsize(codepage);
 		dst = kmalloc(len, GFP_KERNEL);
 		if (!dst)
 			return NULL;
-		cifs_from_ucs2(dst, (__le16 *) src, len, maxlen, codepage,
+		cifs_from_utf16(dst, (__le16 *) src, len, maxlen, codepage,
 			       false);
 	} else {
 		len = strnlen(src, maxlen);
@@ -264,7 +265,7 @@ cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
  * names are little endian 16 bit Unicode on the wire
  */
 int
-cifsConvertToUCS(__le16 *target, const char *source, int srclen,
+cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
 		 const struct nls_table *cp, int mapChars)
 {
 	int i, j, charlen;
@@ -273,7 +274,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 	wchar_t tmp;
 
 	if (!mapChars)
-		return cifs_strtoUCS(target, source, PATH_MAX, cp);
+		return cifs_strtoUTF16(target, source, PATH_MAX, cp);
 
 	for (i = 0, j = 0; i < srclen; j++) {
 		src_char = source[i];
@@ -281,7 +282,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 		switch (src_char) {
 		case 0:
 			put_unaligned(0, &target[j]);
-			goto ctoUCS_out;
+			goto ctoUTF16_out;
 		case ':':
 			dst_char = cpu_to_le16(UNI_COLON);
 			break;
@@ -326,7 +327,7 @@ cifsConvertToUCS(__le16 *target, const char *source, int srclen,
 		put_unaligned(dst_char, &target[j]);
 	}
 
-ctoUCS_out:
+ctoUTF16_out:
 	return i;
 }
 

fs/cifs/cifs_unicode.h

@@ -74,16 +74,16 @@ extern const struct UniCaseRange CifsUniLowerRange[];
 #endif				/* UNIUPR_NOLOWER */
 
 #ifdef __KERNEL__
-int cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
-		   const struct nls_table *codepage, bool mapchar);
-int cifs_ucs2_bytes(const __le16 *from, int maxbytes,
-		    const struct nls_table *codepage);
-int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *);
-char *cifs_strndup_from_ucs(const char *src, const int maxlen,
-			    const bool is_unicode,
-			    const struct nls_table *codepage);
-extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
-			const struct nls_table *cp, int mapChars);
+int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
+		    const struct nls_table *codepage, bool mapchar);
+int cifs_utf16_bytes(const __le16 *from, int maxbytes,
+		     const struct nls_table *codepage);
+int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
+char *cifs_strndup_from_utf16(const char *src, const int maxlen,
+			      const bool is_unicode,
+			      const struct nls_table *codepage);
+extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
+			      const struct nls_table *cp, int mapChars);
 
 #endif
 

fs/cifs/cifsencrypt.c

@@ -327,7 +327,7 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
 	attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME);
 	attrptr->length = cpu_to_le16(2 * dlen);
 	blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
-	cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
+	cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
 
 	return 0;
 }
@@ -376,7 +376,7 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
 					kmalloc(attrsize + 1, GFP_KERNEL);
 				if (!ses->domainName)
 						return -ENOMEM;
-				cifs_from_ucs2(ses->domainName,
+				cifs_from_utf16(ses->domainName,
 					(__le16 *)blobptr, attrsize, attrsize,
 					nls_cp, false);
 				break;
@@ -429,7 +429,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 	}
 
 	if (len) {
-		len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp);
+		len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp);
 		UniStrupr(user);
 	} else {
 		memset(user, '\0', 2);
@@ -453,8 +453,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 			rc = -ENOMEM;
 			return rc;
 		}
-		len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len,
-					nls_cp);
+		len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len,
+				      nls_cp);
 		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
 					(char *)domain, 2 * len);
@@ -473,7 +473,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
 			rc = -ENOMEM;
 			return rc;
 		}
-		len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
+		len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len,
 					nls_cp);
 		rc =
 		crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,

fs/cifs/connect.c

@@ -3644,7 +3644,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses,
 	if (ses->capabilities & CAP_UNICODE) {
 		smb_buffer->Flags2 |= SMBFLG2_UNICODE;
 		length =
-		    cifs_strtoUCS((__le16 *) bcc_ptr, tree,
+		    cifs_strtoUTF16((__le16 *) bcc_ptr, tree,
 			6 /* max utf8 char length in bytes */ *
 			(/* server len*/ + 256 /* share len */), nls_codepage);
 		bcc_ptr += 2 * length;	/* convert num 16 bit words to bytes */
@@ -3699,7 +3699,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses,
 
 		/* mostly informational -- no need to fail on error here */
 		kfree(tcon->nativeFileSystem);
-		tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr,
+		tcon->nativeFileSystem = cifs_strndup_from_utf16(bcc_ptr,
 						      bytes_left, is_unicode,
 						      nls_codepage);
 

fs/cifs/readdir.c

@@ -647,10 +647,11 @@ static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir,
 
 		name.name = scratch_buf;
 		name.len =
-			cifs_from_ucs2((char *)name.name, (__le16 *)de.name,
-				       UNICODE_NAME_MAX,
-				       min(de.namelen, (size_t)max_len), nlt,
-				       cifs_sb->mnt_cifs_flags &
+			cifs_from_utf16((char *)name.name, (__le16 *)de.name,
+					UNICODE_NAME_MAX,
+					min_t(size_t, de.namelen,
+					      (size_t)max_len), nlt,
+					cifs_sb->mnt_cifs_flags &
 						CIFS_MOUNT_MAP_SPECIAL_CHR);
 		name.len -= nls_nullsize(nlt);
 	} else {

fs/cifs/sess.c

@@ -167,16 +167,16 @@ unicode_oslm_strings(char **pbcc_area, const struct nls_table *nls_cp)
 	int bytes_ret = 0;
 
 	/* Copy OS version */
-	bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
-				  nls_cp);
+	bytes_ret = cifs_strtoUTF16((__le16 *)bcc_ptr, "Linux version ", 32,
+				    nls_cp);
 	bcc_ptr += 2 * bytes_ret;
-	bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release,
-				  32, nls_cp);
+	bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, init_utsname()->release,
+				    32, nls_cp);
 	bcc_ptr += 2 * bytes_ret;
 	bcc_ptr += 2; /* trailing null */
 
-	bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
-				  32, nls_cp);
+	bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
+				    32, nls_cp);
 	bcc_ptr += 2 * bytes_ret;
 	bcc_ptr += 2; /* trailing null */
 
@@ -197,8 +197,8 @@ static void unicode_domain_string(char **pbcc_area, struct cifs_ses *ses,
 		*(bcc_ptr+1) = 0;
 		bytes_ret = 0;
 	} else
-		bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
-					  256, nls_cp);
+		bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->domainName,
+					    256, nls_cp);
 	bcc_ptr += 2 * bytes_ret;
 	bcc_ptr += 2;  /* account for null terminator */
 
@@ -226,8 +226,8 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifs_ses *ses,
 		*bcc_ptr = 0;
 		*(bcc_ptr+1) = 0;
 	} else {
-		bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->user_name,
-					  MAX_USERNAME_SIZE, nls_cp);
+		bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->user_name,
+					    MAX_USERNAME_SIZE, nls_cp);
 	}
 	bcc_ptr += 2 * bytes_ret;
 	bcc_ptr += 2; /* account for null termination */
@@ -287,7 +287,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses,
 	cFYI(1, "bleft %d", bleft);
 
 	kfree(ses->serverOS);
-	ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+	ses->serverOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
 	cFYI(1, "serverOS=%s", ses->serverOS);
 	len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
 	data += len;
@@ -296,7 +296,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses,
 		return;
 
 	kfree(ses->serverNOS);
-	ses->serverNOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+	ses->serverNOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
 	cFYI(1, "serverNOS=%s", ses->serverNOS);
 	len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
 	data += len;
@@ -305,7 +305,7 @@ decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses,
 		return;
 
 	kfree(ses->serverDomain);
-	ses->serverDomain = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+	ses->serverDomain = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
 	cFYI(1, "serverDomain=%s", ses->serverDomain);
 
 	return;
@@ -502,8 +502,8 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
 		tmp += 2;
 	} else {
 		int len;
-		len = cifs_strtoUCS((__le16 *)tmp, ses->domainName,
-				    MAX_USERNAME_SIZE, nls_cp);
+		len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
+				      MAX_USERNAME_SIZE, nls_cp);
 		len *= 2; /* unicode is 2 bytes each */
 		sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
 		sec_blob->DomainName.Length = cpu_to_le16(len);
@@ -518,8 +518,8 @@ static int build_ntlmssp_auth_blob(unsigned char *pbuffer,
 		tmp += 2;
 	} else {
 		int len;
-		len = cifs_strtoUCS((__le16 *)tmp, ses->user_name,
-				    MAX_USERNAME_SIZE, nls_cp);
+		len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name,
+				      MAX_USERNAME_SIZE, nls_cp);
 		len *= 2; /* unicode is 2 bytes each */
 		sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
 		sec_blob->UserName.Length = cpu_to_le16(len);

fs/cifs/smbencrypt.c

@@ -213,7 +213,7 @@ E_md4hash(const unsigned char *passwd, unsigned char *p16,
 
 	/* Password cannot be longer than 128 characters */
 	if (passwd) /* Password must be converted to NT unicode */
-		len = cifs_strtoUCS(wpwd, passwd, 128, codepage);
+		len = cifs_strtoUTF16(wpwd, passwd, 128, codepage);
 	else {
 		len = 0;
 		*wpwd = 0; /* Ensure string is null terminated */