mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
[CIFS] Allow SMBWrite2 to work to older servers
Signed-off-by: Steve French (sfrench@us.ibm.com)
This commit is contained in:
parent
3e84469d01
commit
8cc64c6ecf
@ -1139,11 +1139,15 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
|
||||
{
|
||||
int rc = -EACCES;
|
||||
WRITE_REQ *pSMB = NULL;
|
||||
int bytes_returned;
|
||||
int bytes_returned, wct;
|
||||
int smb_hdr_len;
|
||||
|
||||
cFYI(1,("write2 at %lld %d bytes",offset,count)); /* BB removeme BB */
|
||||
rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB);
|
||||
if(tcon->ses->capabilities & CAP_LARGE_FILES)
|
||||
wct = 14;
|
||||
else
|
||||
wct = 12;
|
||||
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
|
||||
if (rc)
|
||||
return rc;
|
||||
/* tcon and ses pointer are checked in smb_init */
|
||||
@ -1153,7 +1157,10 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
|
||||
pSMB->AndXCommand = 0xFF; /* none */
|
||||
pSMB->Fid = netfid;
|
||||
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
||||
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
||||
if(wct == 14)
|
||||
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
||||
else if((offset >> 32) > 0) /* can not handle this big offset for old */
|
||||
return -EIO;
|
||||
pSMB->Reserved = 0xFFFFFFFF;
|
||||
pSMB->WriteMode = 0;
|
||||
pSMB->Remaining = 0;
|
||||
@ -1164,9 +1171,17 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
|
||||
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
|
||||
pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
|
||||
smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */
|
||||
pSMB->hdr.smb_buf_length += count+1;
|
||||
pSMB->ByteCount = cpu_to_le16(count + 1);
|
||||
|
||||
if(wct == 14)
|
||||
pSMB->hdr.smb_buf_length += count+1;
|
||||
else /* wct == 12 */
|
||||
pSMB->hdr.smb_buf_length += count+5; /* smb data starts later */
|
||||
if(wct == 14)
|
||||
pSMB->ByteCount = cpu_to_le16(count + 1);
|
||||
else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
|
||||
struct smb_com_writex_req * pSMBW =
|
||||
(struct smb_com_writex_req *)pSMB;
|
||||
pSMBW->ByteCount = cpu_to_le16(count + 5);
|
||||
}
|
||||
iov[0].iov_base = pSMB;
|
||||
iov[0].iov_len = smb_hdr_len + 4;
|
||||
|
||||
@ -1174,7 +1189,7 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
|
||||
long_op);
|
||||
cifs_stats_inc(&tcon->num_writes);
|
||||
if (rc) {
|
||||
cFYI(1, ("Send error in write = %d", rc));
|
||||
cFYI(1, ("Send error Write2 = %d", rc));
|
||||
*nbytes = 0;
|
||||
} else {
|
||||
WRITE_RSP * pSMBr = (WRITE_RSP *)pSMB;
|
||||
|
Loading…
Reference in New Issue
Block a user