Commit afe48c31 authored by Steve French's avatar Steve French

[CIFS] Fix final user of old string conversion code

Signed-off-by: default avatarSteve French <sfrench@us.ibm.com>
parent 34106027
......@@ -2564,7 +2564,6 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
*pparmlen = parm_count;
return 0;
}
#endif /* CIFS_EXPERIMENTAL */
int
CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
......@@ -2611,59 +2610,55 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
} else { /* decode response */
__u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
__u32 data_count = le32_to_cpu(pSMBr->DataCount);
if ((pSMBr->ByteCount < 2) || (data_offset > 512))
if ((pSMBr->ByteCount < 2) || (data_offset > 512)) {
/* BB also check enough total bytes returned */
rc = -EIO; /* bad smb */
else {
if (data_count && (data_count < 2048)) {
char *end_of_smb = 2 /* sizeof byte count */ +
pSMBr->ByteCount +
(char *)&pSMBr->ByteCount;
goto qreparse_out;
}
if (data_count && (data_count < 2048)) {
char *end_of_smb = 2 /* sizeof byte count */ +
pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
struct reparse_data *reparse_buf =
struct reparse_data *reparse_buf =
(struct reparse_data *)
((char *)&pSMBr->hdr.Protocol
+ data_offset);
if ((char *)reparse_buf >= end_of_smb) {
rc = -EIO;
goto qreparse_out;
}
if ((reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset +
reparse_buf->TargetNameLen) >
end_of_smb) {
cFYI(1, ("reparse buf beyond SMB"));
rc = -EIO;
goto qreparse_out;
}
if ((char *)reparse_buf >= end_of_smb) {
rc = -EIO;
goto qreparse_out;
}
if ((reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset +
reparse_buf->TargetNameLen) > end_of_smb) {
cFYI(1, ("reparse buf beyond SMB"));
rc = -EIO;
goto qreparse_out;
}
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len = UniStrnlen((wchar_t *)
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
cifs_from_ucs2(symlinkinfo, (__le16 *)
(reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset),
min(buflen/2,
reparse_buf->TargetNameLen / 2));
cifs_strfromUCS_le(symlinkinfo,
(__le16 *) (reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset),
name_len, nls_codepage);
} else { /* ASCII names */
strncpy(symlinkinfo,
reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset,
min_t(const int, buflen,
reparse_buf->TargetNameLen));
}
} else {
rc = -EIO;
cFYI(1, ("Invalid return data count on "
"get reparse info ioctl"));
buflen,
reparse_buf->TargetNameLen,
nls_codepage, 0);
} else { /* ASCII names */
strncpy(symlinkinfo,
reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset,
min_t(const int, buflen,
reparse_buf->TargetNameLen));
}
symlinkinfo[buflen] = 0; /* just in case so the caller
does not go off the end of the buffer */
cFYI(1, ("readlink result - %s", symlinkinfo));
} else {
rc = -EIO;
cFYI(1, ("Invalid return data count on "
"get reparse info ioctl"));
}
symlinkinfo[buflen] = 0; /* just in case so the caller
does not go off the end of the buffer */
cFYI(1, ("readlink result - %s", symlinkinfo));
}
qreparse_out:
cifs_buf_release(pSMB);
......@@ -2672,6 +2667,7 @@ qreparse_out:
return rc;
}
#endif /* CIFS_EXPERIMENTAL */
#ifdef CONFIG_CIFS_POSIX
......
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