[CIFS] Workaround various server bugs found in testing at connectathon

	- slow down negprot 1ms during mount when RFC1001 over port 139
	to give buggy servers time to clear sess_init
	- remap some plausible but incorrect SMB return codes to the
	right ones in truncate and hardlink paths

Signed-off-by: Steve French <sfrench@us.ibm.com>

5 files changed, 14 insertions, 5 deletions

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 25d7df4a00c3..6238da96cc77 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -8,7 +8,8 @@ max smb buffer size when CIFSMaxBufSize over 64K.  Fix oops in
 cifs_user_read and cifs_readpages (when EAGAIN on send of smb
 on socket is returned over and over).  Add POSIX (advisory) byte range
 locking support (requires server with newest CIFS UNIX Extensions
-to the protocol implemented).
+to the protocol implemented). Slow down negprot slightly in port 139
+RFC1001 case to give session_init time on buggy servers.
 
 Version 1.40
 ------------
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 4cf10f23cda9..b4dcdc2052a0 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -99,5 +99,5 @@ extern ssize_t	cifs_getxattr(struct dentry *, const char *, void *, size_t);
 extern ssize_t  cifs_listxattr(struct dentry *, char *, size_t);
 extern int cifs_ioctl (struct inode * inode, struct file * filep,
                        unsigned int command, unsigned long arg);
-#define CIFS_VERSION   "1.41"
+#define CIFS_VERSION   "1.42"
 #endif                          /* _CIFSFS_H */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b8f1baabd343..3651deca4f24 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1476,6 +1476,14 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
                         rc = smb_send(*csocket, smb_buf, 0x44,
                                 (struct sockaddr *)psin_server);
                         kfree(ses_init_buf);
+                        msleep(1); /* RFC1001 layer in at least one server 
+                                      requires very short break before negprot
+                                      presumably because not expecting negprot
+                                      to follow so fast.  This is a simple
+                                      solution that works without 
+                                      complicating the code and causes no
+                                      significant slowing down on mount
+                                      for everyone else */
                 }
                 /* else the negprot may still work without this 
                 even though malloc failed */
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 0a46a9395ec4..b21038b99fc2 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1166,7 +1166,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                                                 nfid, npid, FALSE);
                         atomic_dec(&open_file->wrtPending);
                         cFYI(1,("SetFSize for attrs rc = %d", rc));
-                        if((rc == -EINVAL) ||(rc == -EOPNOTSUPP)) {
+                        if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
                                 int bytes_written;
                                 rc = CIFSSMBWrite(xid, pTcon,
                                                   nfid, 0, attrs->ia_size,
@@ -1188,7 +1188,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                                            cifs_sb->mnt_cifs_flags &
                                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
                         cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
-                        if(rc == -EINVAL) {
+                        if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
                                 __u16 netfid;
                                 int oplock = FALSE;
 
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 0f99aae33162..ce86ec69fe01 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -67,7 +67,7 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
                                         cifs_sb_target->local_nls, 
                                         cifs_sb_target->mnt_cifs_flags &
                                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
-                if(rc == -EIO)
+                if((rc == -EIO) || (rc == -EINVAL))
                         rc = -EOPNOTSUPP;  
         }