/* * 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 */ unsigned int xid; struct cifs_sb_info *cifs_sb; #ifdef CONFIG_CIFS_POSIX struct cifsFileInfo *pSMBFile = filep->private_data; struct cifs_tcon *tcon; __u64 ExtAttrBits = 0; __u64 ExtAttrMask = 0; __u64 caps; #endif /* CONFIG_CIFS_POSIX */ xid = get_xid(); cFYI(1, "ioctl file %p cmd %u arg %lu", filep, command, arg); cifs_sb = CIFS_SB(inode->i_sb); switch (command) { static bool warned = false; case CIFS_IOC_CHECKUMOUNT: if (!warned) { warned = true; cERROR(1, "the CIFS_IOC_CHECKMOUNT ioctl will " "be deprecated in 3.7. Please " "migrate away from the use of " "umount.cifs"); } 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 (pSMBFile == NULL) break; tcon = tlink_tcon(pSMBFile->tlink); caps = le64_to_cpu(tcon->fsUnixInfo.Capability); if (CIFS_UNIX_EXTATTR_CAP & caps) { 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 (pSMBFile == NULL) break; tcon = tlink_tcon(pSMBFile->tlink); caps = le64_to_cpu(tcon->fsUnixInfo.Capability); if (CIFS_UNIX_EXTATTR_CAP & caps) { if (get_user(ExtAttrBits, (int __user *)arg)) { rc = -EFAULT; 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; } free_xid(xid); return rc; }