[PATCH] cifs: add support for chattr/lsattr in new CIFS POSIX extensions

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 49 insertions, 3 deletions

diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index b4b8e201d428..7b84b2bb8c4a 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -20,6 +20,7 @@
  *   along with this library; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
+
 #include <linux/fs.h>
 #include <linux/ext2_fs.h>
 #include "cifspdu.h"
@@ -32,18 +33,63 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
 {
         int rc = -ENOTTY; /* strange error - but the precedent */
 #ifdef CONFIG_CIFS_POSIX
+        __u64   ExtAttrBits = 0;
+        __u64   ExtAttrMask = 0;
+        __u64   caps;
+#endif /* CONFIG_CIFS_POSIX */
+        int xid;
+        struct cifs_sb_info *cifs_sb;
+        struct cifsTconInfo *tcon;
+        struct cifsFileInfo *pSMBFile =
+                (struct cifsFileInfo *)filep->private_data;
+
+        xid = GetXid();
+
+        cifs_sb = CIFS_SB(inode->i_sb);
+        tcon = cifs_sb->tcon;
+        if (pSMBFile == NULL)
+                goto cifs_ioctl_out;
+
+#ifdef CONFIG_CIFS_POSIX
+        if(tcon)
+                caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
+        else {
+                rc = -EIO;
+                goto cifs_ioctl_out;
+        }
+
         cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));
         switch(command) {
                 case EXT2_IOC_GETFLAGS:
-                        cFYI(1,("get flags not implemented yet"));
-                        return -EOPNOTSUPP;
+                        if(CIFS_UNIX_EXTATTR_CAP & caps) {
+                                rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
+                                        &ExtAttrBits, &ExtAttrMask);
+                                if(rc == 0)
+                                        rc = put_user(ExtAttrBits &
+                                                EXT2_FL_USER_VISIBLE,
+                                                (int __user *)arg);
+                        }
+                        break;
+
                 case EXT2_IOC_SETFLAGS:
+                        if(CIFS_UNIX_EXTATTR_CAP & caps) {
+                                if(get_user(ExtAttrBits,(int __user *)arg)) {
+                                        rc = -EFAULT;
+                                        goto cifs_ioctl_out;
+                                }
+                          /* rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
+                                        extAttrBits, &ExtAttrMask);*/
+                                
+                        }
                         cFYI(1,("set flags not implemented yet"));
-                        return -EOPNOTSUPP;
+                        break;
                 default:
                         cFYI(1,("unsupported ioctl"));
                         return rc;
         }
 #endif /* CONFIG_CIFS_POSIX */
+
+cifs_ioctl_out:
+        FreeXid(xid);
         return rc;
 }