diff options
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifsproto.h | 2 | ||||
| -rw-r--r-- | fs/cifs/cifssmb.c | 64 |
2 files changed, 66 insertions, 0 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 88e2bc44ac58..bf2bff14c24f 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -142,6 +142,8 @@ extern int CIFSFindNext(const int xid, struct cifsTconInfo *tcon, extern int CIFSFindClose(const int, struct cifsTconInfo *tcon, const __u16 search_handle); +extern int CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, + u16 netfid, FILE_ALL_INFO *pFindData); extern int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, const unsigned char *searchName, FILE_ALL_INFO *findData, diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 9d17df3e0768..4ed97825db3d 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -3230,8 +3230,72 @@ QInfRetry: return rc; } +int +CIFSSMBQFileInfo(const int xid, struct cifsTconInfo *tcon, + u16 netfid, FILE_ALL_INFO *pFindData) +{ + struct smb_t2_qfi_req *pSMB = NULL; + struct smb_t2_qfi_rsp *pSMBr = NULL; + int rc = 0; + int bytes_returned; + __u16 params, byte_count; + +QFileInfoRetry: + rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB, + (void **) &pSMBr); + if (rc) + return rc; + + params = 2 /* level */ + 2 /* fid */; + pSMB->t2.TotalDataCount = 0; + pSMB->t2.MaxParameterCount = cpu_to_le16(4); + /* BB find exact max data count below from sess structure BB */ + pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize); + 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_t2_qfi_req, + Fid) - 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 + 1 /* pad */ ; + pSMB->t2.TotalParameterCount = cpu_to_le16(params); + pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount; + pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO); + pSMB->Pad = 0; + pSMB->Fid = netfid; + pSMB->hdr.smb_buf_length += byte_count; + + rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, + (struct smb_hdr *) pSMBr, &bytes_returned, 0); + if (rc) { + cFYI(1, ("Send error in QPathInfo = %d", rc)); + } else { /* decode response */ + rc = validate_t2((struct smb_t2_rsp *)pSMBr); + if (rc) /* BB add auto retry on EOPNOTSUPP? */ + rc = -EIO; + else if (pSMBr->ByteCount < 40) + rc = -EIO; /* bad smb */ + else if (pFindData) { + __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset); + memcpy((char *) pFindData, + (char *) &pSMBr->hdr.Protocol + + data_offset, sizeof(FILE_ALL_INFO)); + } else + rc = -ENOMEM; + } + cifs_buf_release(pSMB); + if (rc == -EAGAIN) + goto QFileInfoRetry; + return rc; +} int CIFSSMBQPathInfo(const int xid, struct cifsTconInfo *tcon, |