evie/android_kernel_oneplus_msm8998
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[CIFS] Fix final user of old string conversion code

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Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2009-05-02 05:25:46 +00:00
parent 3410602732
commit afe48c31ea
1 changed files with 38 additions and 42 deletions
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26
fs/cifs/cifssmb.c
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@ -2564,7 +2564,6 @@ validate_ntransact(char *buf, char **ppparm, char **ppdata,
*pparmlen = parm_count; *pparmlen = parm_count;
return 0; return 0;
} }
#endif /* CIFS_EXPERIMENTAL */
int int
CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon, CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
@ -2611,14 +2610,14 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
} else { /* decode response */ } else { /* decode response */
__u32 data_offset = le32_to_cpu(pSMBr->DataOffset); __u32 data_offset = le32_to_cpu(pSMBr->DataOffset);
__u32 data_count = le32_to_cpu(pSMBr->DataCount); __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 */ /* BB also check enough total bytes returned */
rc = -EIO; /* bad smb */ rc = -EIO; /* bad smb */
else { goto qreparse_out;
}
if (data_count && (data_count < 2048)) { if (data_count && (data_count < 2048)) {
char *end_of_smb = 2 /* sizeof byte count */ + char *end_of_smb = 2 /* sizeof byte count */ +
pSMBr->ByteCount + pSMBr->ByteCount + (char *)&pSMBr->ByteCount;
(char *)&pSMBr->ByteCount;
struct reparse_data *reparse_buf = struct reparse_data *reparse_buf =
(struct reparse_data *) (struct reparse_data *)
@ -2630,23 +2629,19 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
} }
if ((reparse_buf->LinkNamesBuf + if ((reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset + reparse_buf->TargetNameOffset +
reparse_buf->TargetNameLen) > reparse_buf->TargetNameLen) > end_of_smb) {
end_of_smb) {
cFYI(1, ("reparse buf beyond SMB")); cFYI(1, ("reparse buf beyond SMB"));
rc = -EIO; rc = -EIO;
goto qreparse_out; goto qreparse_out;
} }
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) { if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len = UniStrnlen((wchar_t *) cifs_from_ucs2(symlinkinfo, (__le16 *)
(reparse_buf->LinkNamesBuf + (reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset), reparse_buf->TargetNameOffset),
min(buflen/2, buflen,
reparse_buf->TargetNameLen / 2)); reparse_buf->TargetNameLen,
cifs_strfromUCS_le(symlinkinfo, nls_codepage, 0);
(__le16 *) (reparse_buf->LinkNamesBuf +
reparse_buf->TargetNameOffset),
name_len, nls_codepage);
} else { /* ASCII names */ } else { /* ASCII names */
strncpy(symlinkinfo, strncpy(symlinkinfo,
reparse_buf->LinkNamesBuf + reparse_buf->LinkNamesBuf +
@ -2663,7 +2658,7 @@ CIFSSMBQueryReparseLinkInfo(const int xid, struct cifsTconInfo *tcon,
does not go off the end of the buffer */ does not go off the end of the buffer */
cFYI(1, ("readlink result - %s", symlinkinfo)); cFYI(1, ("readlink result - %s", symlinkinfo));
} }
}
qreparse_out: qreparse_out:
cifs_buf_release(pSMB); cifs_buf_release(pSMB);
@ -2672,6 +2667,7 @@ qreparse_out:
return rc; return rc;
} }
#endif /* CIFS_EXPERIMENTAL */
#ifdef CONFIG_CIFS_POSIX #ifdef CONFIG_CIFS_POSIX