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[PATCH] cifs: add support for chattr/lsattr in new CIFS POSIX extensions

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Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Steve French
2005-04-28 22:41:04 -07:00
committed by Linus Torvalds
parent 1da0c78b32
commit f654bac222
6 changed files with 211 additions and 13 deletions
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86
fs/cifs/cifssmb.c
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@ -2072,7 +2072,91 @@ setACLerrorExit:
return rc;
}
#endif
/* BB fix tabs in this function FIXME BB */
int
CIFSGetExtAttr(const int xid, struct cifsTconInfo *tcon,
const int netfid, __u64 * pExtAttrBits, __u64 *pMask)
{
int rc = 0;
struct smb_t2_qfi_req *pSMB = NULL;
struct smb_t2_qfi_rsp *pSMBr = NULL;
int bytes_returned;
__u16 params, byte_count;
cFYI(1,("In GetExtAttr"));
if(tcon == NULL)
return -ENODEV;
GetExtAttrRetry:
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
(void **) &pSMBr);
if (rc)
return rc;
params = 2 /* level */ +2 /* fid */ + 2 /* rsrvd */;
pSMB->t2.TotalDataCount = 0;
pSMB->t2.MaxParameterCount = cpu_to_le16(2);
/* BB find exact max data count below from sess structure BB */
pSMB->t2.MaxDataCount = cpu_to_le16(4000);
pSMB->t2.MaxSetupCount = 0;
pSMB->t2.Reserved = 0;
pSMB->t2.Flags = 0;
pSMB->t2.Timeout = 0;
pSMB->t2.Reserved2 = 0;
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(
struct smb_com_transaction2_qpi_req ,InformationLevel) - 4);
pSMB->t2.DataCount = 0;
pSMB->t2.DataOffset = 0;
pSMB->t2.SetupCount = 1;
pSMB->t2.Reserved3 = 0;
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
byte_count = params + 3 /* pad */ ;
pSMB->t2.TotalParameterCount = cpu_to_le16(params);
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
pSMB->Pad1 = 0;
pSMB->Pad2 = 0;
pSMB->Fid = netfid;
pSMB->hdr.smb_buf_length += byte_count;
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cFYI(1, ("error %d in GetExtAttr", rc));
} else {
/* decode response */
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
if (rc || (pSMBr->ByteCount < 2))
/* BB also check enough total bytes returned */
/* If rc should we check for EOPNOSUPP and
disable the srvino flag? or in caller? */
rc = -EIO; /* bad smb */
else {
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
struct file_chattr_info * pfinfo;
/* BB Do we need a cast or hash here ? */
if(count != 16) {
cFYI(1, ("Illegal size ret in GetExtAttr"));
rc = -EIO;
goto GetExtAttrOut;
}
pfinfo = (struct file_chattr_info *)
(data_offset + (char *) &pSMBr->hdr.Protocol);
*pExtAttrBits = le64_to_cpu(pfinfo->mode);
*pMask = le64_to_cpu(pfinfo->mask);
}
}
GetExtAttrOut:
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
goto GetExtAttrRetry;
return rc;
}
#endif /* CONFIG_POSIX */
int
CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon,