/* * fs/cifs/ioctl.c * * vfs operations that deal with io control * * Copyright (C) International Business Machines Corp., 2005,2007 * Author(s): Steve French (sfrench@us.ibm.com) * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published * by the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * 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 "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h" #include "cifs_debug.h" #include "cifsfs.h" #define CIFS_IOC_CHECKUMOUNT _IO(0xCF, 2) long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) { struct inode *inode = filep->f_dentry->d_inode; int rc = -ENOTTY; /* strange error - but the precedent */ int xid; struct cifs_sb_info *cifs_sb; #ifdef CONFIG_CIFS_POSIX __u64 ExtAttrBits = 0; __u64 ExtAttrMask = 0; __u64 caps; struct cifsTconInfo *tcon; struct cifsFileInfo *pSMBFile = (struct cifsFileInfo *)filep->private_data; #endif /* CONFIG_CIFS_POSIX */ xid = GetXid(); cFYI(1, ("ioctl file %p cmd %u arg %lu", filep, command, arg)); cifs_sb = CIFS_SB(inode->i_sb); #ifdef CONFIG_CIFS_POSIX tcon = cifs_sb->tcon; if (tcon) caps = le64_to_cpu(tcon->fsUnixInfo.Capability); else { rc = -EIO; FreeXid(xid); return -EIO; } #endif /* CONFIG_CIFS_POSIX */ switch (command) { case CIFS_IOC_CHECKUMOUNT: cFYI(1, ("User unmount attempted")); if (cifs_sb->mnt_uid == current->uid) rc = 0; else { rc = -EACCES; cFYI(1, ("uids do not match")); } break; #ifdef CONFIG_CIFS_POSIX case FS_IOC_GETFLAGS: if (CIFS_UNIX_EXTATTR_CAP & caps) { if (pSMBFile == NULL) break; rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid, &ExtAttrBits, &ExtAttrMask); if (rc == 0) rc = put_user(ExtAttrBits & FS_FL_USER_VISIBLE, (int __user *)arg); } break; case FS_IOC_SETFLAGS: if (CIFS_UNIX_EXTATTR_CAP & caps) { if (get_user(ExtAttrBits, (int __user *)arg)) { rc = -EFAULT; break; } if (pSMBFile == NULL) break; /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid, extAttrBits, &ExtAttrMask);*/ } cFYI(1, ("set flags not implemented yet")); break; #endif /* CONFIG_CIFS_POSIX */ default: cFYI(1, ("unsupported ioctl")); break; } FreeXid(xid); return rc; }