Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[kernel.git] / fs / cifs / cifssmb.c
index 3f4fbd6..5d3f29f 100644 (file)
@@ -1431,6 +1431,8 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
        __u32 bytes_sent;
        __u16 byte_count;
 
+       *nbytes = 0;
+
        /* cFYI(1, ("write at %lld %d bytes", offset, count));*/
        if (tcon->ses == NULL)
                return -ECONNABORTED;
@@ -1513,11 +1515,18 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon,
        cifs_stats_inc(&tcon->num_writes);
        if (rc) {
                cFYI(1, ("Send error in write = %d", rc));
-               *nbytes = 0;
        } else {
                *nbytes = le16_to_cpu(pSMBr->CountHigh);
                *nbytes = (*nbytes) << 16;
                *nbytes += le16_to_cpu(pSMBr->Count);
+
+               /*
+                * Mask off high 16 bits when bytes written as returned by the
+                * server is greater than bytes requested by the client. Some
+                * OS/2 servers are known to set incorrect CountHigh values.
+                */
+               if (*nbytes > count)
+                       *nbytes &= 0xFFFF;
        }
 
        cifs_buf_release(pSMB);
@@ -1606,6 +1615,14 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon,
                *nbytes = le16_to_cpu(pSMBr->CountHigh);
                *nbytes = (*nbytes) << 16;
                *nbytes += le16_to_cpu(pSMBr->Count);
+
+               /*
+                * Mask off high 16 bits when bytes written as returned by the
+                * server is greater than bytes requested by the client. OS/2
+                * servers are known to set incorrect CountHigh values.
+                */
+               if (*nbytes > count)
+                       *nbytes &= 0xFFFF;
        }
 
 /*     cifs_small_buf_release(pSMB); */ /* Freed earlier now in SendReceive2 */
@@ -1794,8 +1811,21 @@ CIFSSMBPosixLock(const int xid, struct cifsTconInfo *tcon,
                }
                parm_data = (struct cifs_posix_lock *)
                        ((char *)&pSMBr->hdr.Protocol + data_offset);
-               if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
+               if (parm_data->lock_type == __constant_cpu_to_le16(CIFS_UNLCK))
                        pLockData->fl_type = F_UNLCK;
+               else {
+                       if (parm_data->lock_type ==
+                                       __constant_cpu_to_le16(CIFS_RDLCK))
+                               pLockData->fl_type = F_RDLCK;
+                       else if (parm_data->lock_type ==
+                                       __constant_cpu_to_le16(CIFS_WRLCK))
+                               pLockData->fl_type = F_WRLCK;
+
+                       pLockData->fl_start = parm_data->start;
+                       pLockData->fl_end = parm_data->start +
+                                               parm_data->length - 1;
+                       pLockData->fl_pid = parm_data->pid;
+               }
        }
 
 plk_err_exit: