Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (51 commits)
  [CIFS] log better errors on failed mounts
  [CIFS] Return better error when server requires signing but client forbids
  [CIFS] fix typo
  [CIFS] acl support part 4
  [CIFS] Fix minor problems noticed by scan
  [CIFS] fix bad handling of EAGAIN error on kernel_recvmsg in cifs_demultiplex_thread
  [CIFS] build break
  [CIFS] endian fixes
  [CIFS] endian fixes in new acl code
  [CIFS] Fix some endianness problems in new acl code
  [CIFS] missing #endif from a previous patch
  [CIFS] formatting fixes
  [CIFS] Break up unicode_sessetup string functions
  [CIFS] parse server_GUID in SPNEGO negProt response
  [CIFS]
  [CIFS] Fix endian conversion problem in posix mkdir
  [CIFS] fix build break when lanman not enabled
  [CIFS] remove two sparse warnings
  [CIFS] remove compile warnings when debug disabled
  [CIFS] CIFS ACL support part 3
  ...

1 files changed, 42 insertions, 10 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 279f3c5e0ce3..5e8b388be3b6 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -115,7 +115,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
                 inode->i_mode = le64_to_cpu(findData.Permissions);
                 /* since we set the inode type below we need to mask off
                    to avoid strange results if bits set above */
-                        inode->i_mode &= ~S_IFMT;
+                inode->i_mode &= ~S_IFMT;
                 if (type == UNIX_FILE) {
                         inode->i_mode |= S_IFREG;
                 } else if (type == UNIX_SYMLINK) {
@@ -575,19 +575,33 @@ int cifs_get_inode_info(struct inode **pinode,
         return rc;
 }
 
+static const struct inode_operations cifs_ipc_inode_ops = {
+        .lookup = cifs_lookup,
+};
+
 /* gets root inode */
 void cifs_read_inode(struct inode *inode)
 {
-        int xid;
+        int xid, rc;
         struct cifs_sb_info *cifs_sb;
 
         cifs_sb = CIFS_SB(inode->i_sb);
         xid = GetXid();
 
         if (cifs_sb->tcon->unix_ext)
-                cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
+                rc = cifs_get_inode_info_unix(&inode, "", inode->i_sb, xid);
         else
-                cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
+                rc = cifs_get_inode_info(&inode, "", NULL, inode->i_sb, xid);
+        if (rc && cifs_sb->tcon->ipc) {
+                cFYI(1, ("ipc connection - fake read inode"));
+                inode->i_mode |= S_IFDIR;
+                inode->i_nlink = 2;
+                inode->i_op = &cifs_ipc_inode_ops;
+                inode->i_fop = &simple_dir_operations;
+                inode->i_uid = cifs_sb->mnt_uid;
+                inode->i_gid = cifs_sb->mnt_gid;
+        }
+
         /* can not call macro FreeXid here since in a void func */
         _FreeXid(xid);
 }
@@ -919,18 +933,25 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
                         goto mkdir_out;
                 }
 
+                mode &= ~current->fs->umask;
                 rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
                                 mode, NULL /* netfid */, pInfo, &oplock,
                                 full_path, cifs_sb->local_nls,
                                 cifs_sb->mnt_cifs_flags &
                                         CIFS_MOUNT_MAP_SPECIAL_CHR);
-                if (rc) {
+                if (rc == -EOPNOTSUPP) {
+                        kfree(pInfo);
+                        goto mkdir_retry_old;
+                } else if (rc) {
                         cFYI(1, ("posix mkdir returned 0x%x", rc));
                         d_drop(direntry);
                 } else {
                         int obj_type;
-                        if (pInfo->Type == -1) /* no return info - go query */
+                        if (pInfo->Type == cpu_to_le32(-1)) {
+                                /* no return info, go query for it */
+                                kfree(pInfo);
                                 goto mkdir_get_info;
+                        }
 /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
         to set uid/gid */
                         inc_nlink(inode);
@@ -940,8 +961,10 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
                                 direntry->d_op = &cifs_dentry_ops;
 
                         newinode = new_inode(inode->i_sb);
-                        if (newinode == NULL)
+                        if (newinode == NULL) {
+                                kfree(pInfo);
                                 goto mkdir_get_info;
+                        }
                         /* Is an i_ino of zero legal? */
                         /* Are there sanity checks we can use to ensure that
                            the server is really filling in that field? */
@@ -972,7 +995,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
                 kfree(pInfo);
                 goto mkdir_out;
         }
-
+mkdir_retry_old:
         /* BB add setting the equivalent of mode via CreateX w/ACLs */
         rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
                           cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -1377,8 +1400,17 @@ static int cifs_vmtruncate(struct inode *inode, loff_t offset)
         }
         i_size_write(inode, offset);
         spin_unlock(&inode->i_lock);
+        /*
+         * unmap_mapping_range is called twice, first simply for efficiency
+         * so that truncate_inode_pages does fewer single-page unmaps. However
+         * after this first call, and before truncate_inode_pages finishes,
+         * it is possible for private pages to be COWed, which remain after
+         * truncate_inode_pages finishes, hence the second unmap_mapping_range
+         * call must be made for correctness.
+         */
         unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
         truncate_inode_pages(mapping, offset);
+        unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1);
         goto out_truncate;
 
 do_expand:
@@ -1469,7 +1501,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                         atomic_dec(&open_file->wrtPending);
                         cFYI(1, ("SetFSize for attrs rc = %d", rc));
                         if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
-                                int bytes_written;
+                                unsigned int bytes_written;
                                 rc = CIFSSMBWrite(xid, pTcon,
                                                   nfid, 0, attrs->ia_size,
                                                   &bytes_written, NULL, NULL,
@@ -1502,7 +1534,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                                         cifs_sb->mnt_cifs_flags &
                                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
                                 if (rc == 0) {
-                                        int bytes_written;
+                                        unsigned int bytes_written;
                                         rc = CIFSSMBWrite(xid, pTcon,
                                                         netfid, 0,
                                                         attrs->ia_size,