[CIFS] Fix mknod of block and chardev over SFU mounts

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

1 files changed, 30 insertions, 2 deletions

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 8dfe717a332a..16b21522e8fe 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -292,7 +292,8 @@ cifs_create_out:
         return rc;
 }
 
-int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t device_number) 
+int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, 
+                dev_t device_number) 
 {
         int rc = -EPERM;
         int xid;
@@ -368,7 +369,34 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t dev
 
                         if(!rc) {
                                 /* BB Do not bother to decode buf since no
-                                   local inode yet to put timestamps in */
+                                   local inode yet to put timestamps in,
+                                   but we can reuse it safely */
+                                int bytes_written;
+                                struct win_dev *pdev;
+                                pdev = (struct win_dev *)buf;
+                                if(S_ISCHR(mode)) {
+                                        memcpy(pdev->type, "IntxCHR", 8);
+                                        pdev->major =
+                                              cpu_to_le64(MAJOR(device_number));
+                                        pdev->minor = 
+                                              cpu_to_le64(MINOR(device_number));
+                                        rc = CIFSSMBWrite(xid, pTcon,
+                                                fileHandle,
+                                                sizeof(struct win_dev),
+                                                0, &bytes_written, (char *)pdev,
+                                                NULL, 0);
+                                } else if(S_ISBLK(mode)) {
+                                        memcpy(pdev->type, "IntxBLK", 8);
+                                        pdev->major =
+                                              cpu_to_le64(MAJOR(device_number));
+                                        pdev->minor =
+                                              cpu_to_le64(MINOR(device_number));
+                                        rc = CIFSSMBWrite(xid, pTcon,
+                                                fileHandle,
+                                                sizeof(struct win_dev),
+                                                0, &bytes_written, (char *)pdev,
+                                                NULL, 0);
+                                } /* else if(S_ISFIFO */
                                 CIFSSMBClose(xid, pTcon, fileHandle);
                                 d_drop(direntry);
                         }