path: root/fs/cifs/netmisc.c

/*
 *   fs/cifs/netmisc.c
 *
 *   Copyright (c) International Business Machines  Corp., 2002,2008
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   Error mapping routines from Samba libsmb/errormap.c
 *   Copyright (C) Andrew Tridgell 2001
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/net.h>
#include <linux/string.h>
#include <linux/in.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <asm/div64.h>
#include <asm/byteorder.h>
#include <linux/inet.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "smberr.h"
#include "cifs_debug.h"
#include "nterr.h"

struct smb_to_posix_error {
	__u16 smb_err;
	int posix_code;
};

static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
	{ERRbadfunc, -EINVAL},
	{ERRbadfile, -ENOENT},
	{ERRbadpath, -ENOTDIR},
	{ERRnofids, -EMFILE},
	{ERRnoaccess, -EACCES},
	{ERRbadfid, -EBADF},
	{ERRbadmcb, -EIO},
	{ERRnomem, -ENOMEM},
	{ERRbadmem, -EFAULT},
	{ERRbadenv, -EFAULT},
	{ERRbadformat, -EINVAL},
	{ERRbadaccess, -EACCES},
	{ERRbaddata, -EIO},
	{ERRbaddrive, -ENXIO},
	{ERRremcd, -EACCES},
	{ERRdiffdevice, -EXDEV},
	{ERRnofiles, -ENOENT},
	{ERRbadshare, -ETXTBSY},
	{ERRlock, -EACCES},
	{ERRunsup, -EINVAL},
	{ERRnosuchshare, -ENXIO},
	{ERRfilexists, -EEXIST},
	{ERRinvparm, -EINVAL},
	{ERRdiskfull, -ENOSPC},
	{ERRinvname, -ENOENT},
	{ERRinvlevel, -EOPNOTSUPP},
	{ERRdirnotempty, -ENOTEMPTY},
	{ERRnotlocked, -ENOLCK},
	{ERRcancelviolation, -ENOLCK},
	{ERRalreadyexists, -EEXIST},
	{ERRmoredata, -EOVERFLOW},
	{ERReasnotsupported, -EOPNOTSUPP},
	{ErrQuota, -EDQUOT},
	{ErrNotALink, -ENOLINK},
	{ERRnetlogonNotStarted, -ENOPROTOOPT},
	{ErrTooManyLinks, -EMLINK},
	{0, 0}
};

static const struct smb_to_posix_error mapping_table_ERRSRV[] = {
	{ERRerror, -EIO},
	{ERRbadpw, -EACCES},  /* was EPERM */
	{ERRbadtype, -EREMOTE},
	{ERRaccess, -EACCES},
	{ERRinvtid, -ENXIO},
	{ERRinvnetname, -ENXIO},
	{ERRinvdevice, -ENXIO},
	{ERRqfull, -ENOSPC},
	{ERRqtoobig, -ENOSPC},
	{ERRqeof, -EIO},
	{ERRinvpfid, -EBADF},
	{ERRsmbcmd, -EBADRQC},
	{ERRsrverror, -EIO},
	{ERRbadBID, -EIO},
	{ERRfilespecs, -EINVAL},
	{ERRbadLink, -EIO},
	{ERRbadpermits, -EINVAL},
	{ERRbadPID, -ESRCH},
	{ERRsetattrmode, -EINVAL},
	{ERRpaused, -EHOSTDOWN},
	{ERRmsgoff, -EHOSTDOWN},
	{ERRnoroom, -ENOSPC},
	{ERRrmuns, -EUSERS},
	{ERRtimeout, -ETIME},
	{ERRnoresource, -ENOBUFS},
	{ERRtoomanyuids, -EUSERS},
	{ERRbaduid, -EACCES},
	{ERRusempx, -EIO},
	{ERRusestd, -EIO},
	{ERR_NOTIFY_ENUM_DIR, -ENOBUFS},
	{ERRnoSuchUser, -EACCES},
/*	{ERRaccountexpired, -EACCES},
	{ERRbadclient, -EACCES},
	{ERRbadLogonTime, -EACCES},
	{ERRpasswordExpired, -EACCES},*/
	{ERRaccountexpired, -EKEYEXPIRED},
	{ERRbadclient, -EACCES},
	{ERRbadLogonTime, -EACCES},
	{ERRpasswordExpired, -EKEYEXPIRED},

	{ERRnosupport, -EINVAL},
	{0, 0}
};

static const struct smb_to_posix_error mapping_table_ERRHRD[] = {
	{0, 0}
};


/* if the mount helper is missing we need to reverse the 1st slash
   from '/' to backslash in order to format the UNC properly for
   ip address parsing and for tree connect (unless the user
   remembered to put the UNC name in properly). Fortunately we do
   not have to call this twice (we check for IPv4 addresses
   first, so it is already converted by the time we
   try IPv6 addresses */
static int canonicalize_unc(char *cp)
{
	int i;

	for (i = 0; i <= 46 /* INET6_ADDRSTRLEN */ ; i++) {
		if (cp[i] == 0)
			break;
		if (cp[i] == '\\')
			break;
		if (cp[i] == '/') {
			cFYI(DBG2, ("change slash to \\ in malformed UNC"));
			cp[i] = '\\';
			return 1;
		}
	}