提交 e89dc920 编写于 作者: S Steve French

[CIFS] Cleanup sparse warnings for unicode little endian casts

Following Shaggy's suggestion, do a better job on the unicode string
handling routines in cifs in specifying that the wchar_t are really
little endian widechars (__le16).
Signed-off-by: NSteve French <sfrench@us.ibm.com>
上级 8b94bcb9
/*
* fs/cifs/cifs_unicode.c
*
* Copyright (c) International Business Machines Corp., 2000,2002
* Copyright (c) International Business Machines Corp., 2000,2005
* Modified by Steve French (sfrench@us.ibm.com)
*
* This program is free software; you can redistribute it and/or modify
......@@ -31,7 +31,7 @@
*
*/
int
cifs_strfromUCS_le(char *to, const wchar_t * from, /* LITTLE ENDIAN */
cifs_strfromUCS_le(char *to, const __le16 * from,
int len, const struct nls_table *codepage)
{
int i;
......@@ -60,25 +60,26 @@ cifs_strfromUCS_le(char *to, const wchar_t * from, /* LITTLE ENDIAN */
*
*/
int
cifs_strtoUCS(wchar_t * to, const char *from, int len,
cifs_strtoUCS(__le16 * to, const char *from, int len,
const struct nls_table *codepage)
{
int charlen;
int i;
wchar_t * wchar_to = (wchar_t *)to; /* needed to quiet sparse */
for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
/* works for 2.4.0 kernel or later */
charlen = codepage->char2uni(from, len, &to[i]);
charlen = codepage->char2uni(from, len, &wchar_to[i]);
if (charlen < 1) {
cERROR(1,
("cifs_strtoUCS: char2uni returned %d",
charlen));
/* A question mark */
to[i] = (wchar_t)cpu_to_le16(0x003f);
to[i] = cpu_to_le16(0x003f);
charlen = 1;
} else
to[i] = (wchar_t)cpu_to_le16(to[i]);
to[i] = cpu_to_le16(wchar_to[i]);
}
......
......@@ -5,7 +5,7 @@
* Convert a unicode character to upper or lower case using
* compressed tables.
*
* Copyright (c) International Business Machines Corp., 2000,2002
* Copyright (c) International Business Machines Corp., 2000,2005555555555555555555555555555555555555555555555555555555
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -59,8 +59,8 @@ extern struct UniCaseRange UniLowerRange[];
#endif /* UNIUPR_NOLOWER */
#ifdef __KERNEL__
int cifs_strfromUCS_le(char *, const wchar_t *, int, const struct nls_table *);
int cifs_strtoUCS(wchar_t *, const char *, int, const struct nls_table *);
int cifs_strfromUCS_le(char *, const __le16 *, int, const struct nls_table *);
int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *);
#endif
/*
......
......@@ -149,7 +149,7 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_
char temp_hash[16];
struct HMACMD5Context ctx;
char * ucase_buf;
wchar_t * unicode_buf;
__le16 * unicode_buf;
unsigned int i,user_name_len,dom_name_len;
if(ses == NULL)
......
......@@ -1553,7 +1553,7 @@ CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
cifs_strtoUCS((wchar_t *) pSMB->FileName, fromName, PATH_MAX
cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX
/* find define for this maxpathcomponent */
, nls_codepage);
name_len++; /* trailing null */
......@@ -1577,7 +1577,7 @@ CIFSUnixCreateSymLink(const int xid, struct cifsTconInfo *tcon,
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len_target =
cifs_strtoUCS((wchar_t *) data_offset, toName, PATH_MAX
cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX
/* find define for this maxpathcomponent */
, nls_codepage);
name_len_target++; /* trailing null */
......@@ -1803,7 +1803,7 @@ CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
cifs_strtoUCS((wchar_t *) pSMB->FileName, searchName, PATH_MAX
cifs_strtoUCS((__le16 *) pSMB->FileName, searchName, PATH_MAX
/* find define for this maxpathcomponent */
, nls_codepage);
name_len++; /* trailing null */
......@@ -1860,7 +1860,7 @@ CIFSSMBUnixQuerySymLink(const int xid, struct cifsTconInfo *tcon,
min_t(const int, buflen,count) / 2);
/* BB FIXME investigate remapping reserved chars here */
cifs_strfromUCS_le(symlinkinfo,
(wchar_t *) ((char *)&pSMBr->hdr.Protocol +
(__le16 *) ((char *)&pSMBr->hdr.Protocol +
data_offset),
name_len, nls_codepage);
} else {
......@@ -1951,7 +1951,7 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
reparse_buf->TargetNameOffset),
min(buflen/2, reparse_buf->TargetNameLen / 2));
cifs_strfromUCS_le(symlinkinfo,
(wchar_t *) (reparse_buf->LinkNamesBuf +
(__le16 *) (reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset),
name_len, nls_codepage);
} else { /* ASCII names */
......@@ -3203,7 +3203,7 @@ CIFSGetDFSRefer(const int xid, struct cifsSesInfo *ses,
temp = ((char *)referrals) + le16_to_cpu(referrals->DfsPathOffset);
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
cifs_strfromUCS_le(*targetUNCs,
(wchar_t *) temp, name_len, nls_codepage);
(__le16 *) temp, name_len, nls_codepage);
} else {
strncpy(*targetUNCs,temp,name_len);
}
......
......@@ -1986,32 +1986,32 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bytes_returned = 0; /* skill null user */
else
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100,
cifs_strtoUCS((__le16 *) bcc_ptr, user, 100,
nls_codepage);
/* convert number of 16 bit words to bytes */
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2; /* trailing null */
if (domain == NULL)
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr,
cifs_strtoUCS((__le16 *) bcc_ptr,
"CIFS_LINUX_DOM", 32, nls_codepage);
else
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64,
cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ",
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
32, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release,
cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release,
32, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS,
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
64, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
......@@ -2081,7 +2081,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if(ses->serverOS == NULL)
goto sesssetup_nomem;
cifs_strfromUCS_le(ses->serverOS,
(wchar_t *)bcc_ptr, len,nls_codepage);
(__le16 *)bcc_ptr, len,nls_codepage);
bcc_ptr += 2 * (len + 1);
remaining_words -= len + 1;
ses->serverOS[2 * len] = 0;
......@@ -2093,7 +2093,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if(ses->serverNOS == NULL)
goto sesssetup_nomem;
cifs_strfromUCS_le(ses->serverNOS,
(wchar_t *)bcc_ptr,len,nls_codepage);
(__le16 *)bcc_ptr,len,nls_codepage);
bcc_ptr += 2 * (len + 1);
ses->serverNOS[2 * len] = 0;
ses->serverNOS[1 + (2 * len)] = 0;
......@@ -2111,7 +2111,7 @@ CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses,
if(ses->serverDomain == NULL)
goto sesssetup_nomem;
cifs_strfromUCS_le(ses->serverDomain,
(wchar_t *)bcc_ptr,len,nls_codepage);
(__le16 *)bcc_ptr,len,nls_codepage);
bcc_ptr += 2 * (len + 1);
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
......@@ -2255,30 +2255,30 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
}
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, user, 100, nls_codepage);
cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, nls_codepage);
bcc_ptr += 2 * bytes_returned; /* convert num of 16 bit words to bytes */
bcc_ptr += 2; /* trailing null */
if (domain == NULL)
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr,
cifs_strtoUCS((__le16 *) bcc_ptr,
"CIFS_LINUX_DOM", 32, nls_codepage);
else
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64,
cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ",
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
32, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32,
cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS,
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
64, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2;
......@@ -2357,7 +2357,7 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
(wchar_t *)
(__le16 *)
bcc_ptr, len,
nls_codepage);
bcc_ptr += 2 * (len + 1);
......@@ -2372,7 +2372,7 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
kzalloc(2 * (len + 1),
GFP_KERNEL);
cifs_strfromUCS_le(ses->serverNOS,
(wchar_t *)bcc_ptr,
(__le16 *)bcc_ptr,
len,
nls_codepage);
bcc_ptr += 2 * (len + 1);
......@@ -2384,9 +2384,8 @@ CIFSSpnegoSessSetup(unsigned int xid, struct cifsSesInfo *ses,
/* last string is not always null terminated (for e.g. for Windows XP & 2000) */
ses->serverDomain = kzalloc(2*(len+1),GFP_KERNEL);
cifs_strfromUCS_le(ses->serverDomain,
(wchar_t *)bcc_ptr,
len,
nls_codepage);
(__le16 *)bcc_ptr,
len, nls_codepage);
bcc_ptr += 2*(len+1);
ses->serverDomain[2*len] = 0;
ses->serverDomain[1+(2*len)] = 0;
......@@ -2560,16 +2559,16 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
}
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ",
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
32, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32,
cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2; /* null terminate Linux version */
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS,
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
64, nls_codepage);
bcc_ptr += 2 * bytes_returned;
*(bcc_ptr + 1) = 0;
......@@ -2673,7 +2672,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
(wchar_t *)
(__le16 *)
bcc_ptr, len,
nls_codepage);
bcc_ptr += 2 * (len + 1);
......@@ -2690,7 +2689,7 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
GFP_KERNEL);
cifs_strfromUCS_le(ses->
serverNOS,
(wchar_t *)
(__le16 *)
bcc_ptr,
len,
nls_codepage);
......@@ -2708,23 +2707,15 @@ CIFSNTLMSSPNegotiateSessSetup(unsigned int xid,
1),
GFP_KERNEL);
cifs_strfromUCS_le
(ses->
serverDomain,
(wchar_t *)
bcc_ptr, len,
nls_codepage);
(ses->serverDomain,
(__le16 *)bcc_ptr,
len, nls_codepage);
bcc_ptr +=
2 * (len + 1);
ses->
serverDomain[2
* len]
ses->serverDomain[2*len]
= 0;
ses->
serverDomain[1
+
(2
*
len)]
ses->serverDomain
[1 + (2 * len)]
= 0;
} /* else no more room so create dummy domain string */
else
......@@ -2903,7 +2894,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
SecurityBlob->DomainName.MaximumLength = 0;
} else {
__u16 len =
cifs_strtoUCS((wchar_t *) bcc_ptr, domain, 64,
cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64,
nls_codepage);
len *= 2;
SecurityBlob->DomainName.MaximumLength =
......@@ -2921,7 +2912,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
SecurityBlob->UserName.MaximumLength = 0;
} else {
__u16 len =
cifs_strtoUCS((wchar_t *) bcc_ptr, user, 64,
cifs_strtoUCS((__le16 *) bcc_ptr, user, 64,
nls_codepage);
len *= 2;
SecurityBlob->UserName.MaximumLength =
......@@ -2934,7 +2925,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
cpu_to_le16(len);
}
/* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((wchar_t *) bcc_ptr, "AMACHINE",64, nls_codepage);
/* SecurityBlob->WorkstationName.Length = cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage);
SecurityBlob->WorkstationName.Length *= 2;
SecurityBlob->WorkstationName.MaximumLength = cpu_to_le16(SecurityBlob->WorkstationName.Length);
SecurityBlob->WorkstationName.Buffer = cpu_to_le32(SecurityBlobLength);
......@@ -2947,16 +2938,16 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
bcc_ptr++;
}
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, "Linux version ",
cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ",
32, nls_codepage);
bcc_ptr += 2 * bytes_returned;
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, system_utsname.release, 32,
cifs_strtoUCS((__le16 *) bcc_ptr, system_utsname.release, 32,
nls_codepage);
bcc_ptr += 2 * bytes_returned;
bcc_ptr += 2; /* null term version string */
bytes_returned =
cifs_strtoUCS((wchar_t *) bcc_ptr, CIFS_NETWORK_OPSYS,
cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
64, nls_codepage);
bcc_ptr += 2 * bytes_returned;
*(bcc_ptr + 1) = 0;
......@@ -3069,7 +3060,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
ses->serverOS =
kzalloc(2 * (len + 1), GFP_KERNEL);
cifs_strfromUCS_le(ses->serverOS,
(wchar_t *)
(__le16 *)
bcc_ptr, len,
nls_codepage);
bcc_ptr += 2 * (len + 1);
......@@ -3086,7 +3077,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
GFP_KERNEL);
cifs_strfromUCS_le(ses->
serverNOS,
(wchar_t *)
(__le16 *)
bcc_ptr,
len,
nls_codepage);
......@@ -3105,7 +3096,7 @@ CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses,
cifs_strfromUCS_le
(ses->
serverDomain,
(wchar_t *)
(__le16 *)
bcc_ptr, len,
nls_codepage);
bcc_ptr +=
......@@ -3227,7 +3218,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
if (ses->capabilities & CAP_UNICODE) {
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
length =
cifs_strtoUCS((wchar_t *) bcc_ptr, tree, 100, nls_codepage);
cifs_strtoUCS((__le16 *) bcc_ptr, tree, 100, nls_codepage);
bcc_ptr += 2 * length; /* convert num of 16 bit words to bytes */
bcc_ptr += 2; /* skip trailing null */
} else { /* ASCII */
......@@ -3263,7 +3254,7 @@ CIFSTCon(unsigned int xid, struct cifsSesInfo *ses,
tcon->nativeFileSystem =
kzalloc(length + 2, GFP_KERNEL);
cifs_strfromUCS_le(tcon->nativeFileSystem,
(wchar_t *) bcc_ptr,
(__le16 *) bcc_ptr,
length, nls_codepage);
bcc_ptr += 2 * length;
bcc_ptr[0] = 0; /* null terminate the string */
......
......@@ -678,7 +678,7 @@ cifsConvertToUCS(__le16 * target, const char *source, int maxlen,
__u16 temp;
if(!mapChars)
return cifs_strtoUCS((wchar_t *) target, source, PATH_MAX, cp);
return cifs_strtoUCS(target, source, PATH_MAX, cp);
for(i = 0, j = 0; i < maxlen; j++) {
src_char = source[i];
......
......@@ -705,7 +705,7 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
(__le16 *)filename, len/2, nlt);
else
pqst->len = cifs_strfromUCS_le((char *)pqst->name,
(wchar_t *)filename,len/2,nlt);
(__le16 *)filename,len/2,nlt);
} else {
pqst->name = filename;
pqst->len = len;
......
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