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authorJeff Layton <jlayton@redhat.com>2010-02-12 07:44:17 -0500
committerSteve French <sfrench@us.ibm.com>2010-03-05 23:38:25 -0500
commitc8634fd3115497ac311f57be9c12f993437745cf (patch)
tree67f309df555e2d9af25ce3d141d6bc92a5895107 /fs/cifs/cifssmb.c
parentbcd5357f430363376565d07ca542127d6d36602c (diff)
cifs: add a CIFSSMBUnixQFileInfo function
...to allow us to get unix attrs via filehandle. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r--fs/cifs/cifssmb.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 4ed97825db3d..903d53871da7 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -3399,6 +3399,75 @@ QPathInfoRetry:
3399} 3399}
3400 3400
3401int 3401int
3402CIFSSMBUnixQFileInfo(const int xid, struct cifsTconInfo *tcon,
3403 u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
3404{
3405 struct smb_t2_qfi_req *pSMB = NULL;
3406 struct smb_t2_qfi_rsp *pSMBr = NULL;
3407 int rc = 0;
3408 int bytes_returned;
3409 __u16 params, byte_count;
3410
3411UnixQFileInfoRetry:
3412 rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
3413 (void **) &pSMBr);
3414 if (rc)
3415 return rc;
3416
3417 params = 2 /* level */ + 2 /* fid */;
3418 pSMB->t2.TotalDataCount = 0;
3419 pSMB->t2.MaxParameterCount = cpu_to_le16(4);
3420 /* BB find exact max data count below from sess structure BB */
3421 pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
3422 pSMB->t2.MaxSetupCount = 0;
3423 pSMB->t2.Reserved = 0;
3424 pSMB->t2.Flags = 0;
3425 pSMB->t2.Timeout = 0;
3426 pSMB->t2.Reserved2 = 0;
3427 pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
3428 Fid) - 4);
3429 pSMB->t2.DataCount = 0;
3430 pSMB->t2.DataOffset = 0;
3431 pSMB->t2.SetupCount = 1;
3432 pSMB->t2.Reserved3 = 0;
3433 pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
3434 byte_count = params + 1 /* pad */ ;
3435 pSMB->t2.TotalParameterCount = cpu_to_le16(params);
3436 pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
3437 pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
3438 pSMB->Pad = 0;
3439 pSMB->Fid = netfid;
3440 pSMB->hdr.smb_buf_length += byte_count;
3441
3442 rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
3443 (struct smb_hdr *) pSMBr, &bytes_returned, 0);
3444 if (rc) {
3445 cFYI(1, ("Send error in QPathInfo = %d", rc));
3446 } else { /* decode response */
3447 rc = validate_t2((struct smb_t2_rsp *)pSMBr);
3448
3449 if (rc || (pSMBr->ByteCount < sizeof(FILE_UNIX_BASIC_INFO))) {
3450 cERROR(1, ("Malformed FILE_UNIX_BASIC_INFO response.\n"
3451 "Unix Extensions can be disabled on mount "
3452 "by specifying the nosfu mount option."));
3453 rc = -EIO; /* bad smb */
3454 } else {
3455 __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
3456 memcpy((char *) pFindData,
3457 (char *) &pSMBr->hdr.Protocol +
3458 data_offset,
3459 sizeof(FILE_UNIX_BASIC_INFO));
3460 }
3461 }
3462
3463 cifs_buf_release(pSMB);
3464 if (rc == -EAGAIN)
3465 goto UnixQFileInfoRetry;
3466
3467 return rc;
3468}
3469
3470int
3402CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon, 3471CIFSSMBUnixQPathInfo(const int xid, struct cifsTconInfo *tcon,
3403 const unsigned char *searchName, 3472 const unsigned char *searchName,
3404 FILE_UNIX_BASIC_INFO *pFindData, 3473 FILE_UNIX_BASIC_INFO *pFindData,