diff options
| author | Steve French <sfrench@us.ibm.com> | 2005-08-30 20:58:07 -0700 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2005-08-30 20:58:07 -0700 |
| commit | 1c9551878c4629ca78dfe12ed23b9dc8d97770cc (patch) | |
| tree | 4d9df5ad22d88dd0f62ab9f44d761f1df6a77d55 /fs/cifs/cifssmb.c | |
| parent | cb8be64084e6294fcb9e558188fe104050b94f0b (diff) | |
| download | lwn-1c9551878c4629ca78dfe12ed23b9dc8d97770cc.tar.gz lwn-1c9551878c4629ca78dfe12ed23b9dc8d97770cc.zip | |
[CIFS] Add support for legacy servers part 4
Fix WriteX support for old servers which do not support large
files.
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index c8ae3ef422ba..74733851cfad 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1082,12 +1082,20 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, int rc = -EACCES; WRITE_REQ *pSMB = NULL; WRITE_RSP *pSMBr = NULL; - int bytes_returned; + int bytes_returned, wct; __u32 bytes_sent; __u16 byte_count; /* cFYI(1,("write at %lld %d bytes",offset,count));*/ - rc = smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB, + if(tcon->ses == NULL) + return -ECONNABORTED; + + if(tcon->ses->capabilities & CAP_LARGE_FILES) + wct = 14; + else + wct = 12; + + rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB, (void **) &pSMBr); if (rc) return rc; @@ -1098,7 +1106,11 @@ CIFSSMBWrite(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; @@ -1135,7 +1147,14 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); pSMB->hdr.smb_buf_length += bytes_sent+1; - pSMB->ByteCount = cpu_to_le16(byte_count); + + if(wct == 14) + pSMB->ByteCount = cpu_to_le16(byte_count); + else { /* old style write has byte count 4 bytes earlier */ + struct smb_com_writex_req * pSMBW = + (struct smb_com_writex_req *)pSMB; + pSMBW->ByteCount = cpu_to_le16(byte_count); + } rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB, (struct smb_hdr *) pSMBr, &bytes_returned, long_op); |