/usr/include/ntfs-3g/param.h is in ntfs-3g-dev 1:2017.3.23-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* param.h - Parameter values for ntfs-3g
*
* Copyright (c) 2009-2010 Jean-Pierre Andre
*
* This program/include file 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/include file 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 (in the main directory of the NTFS-3G
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _NTFS_PARAM_H
#define _NTFS_PARAM_H
#define CACHE_INODE_SIZE 32 /* inode cache, zero or >= 3 and not too big */
#define CACHE_NIDATA_SIZE 64 /* idata cache, zero or >= 3 and not too big */
#define CACHE_LOOKUP_SIZE 64 /* lookup cache, zero or >= 3 and not too big */
#define CACHE_SECURID_SIZE 16 /* securid cache, zero or >= 3 and not too big */
#define CACHE_LEGACY_SIZE 8 /* legacy cache size, zero or >= 3 and not too big */
#define FORCE_FORMAT_v1x 0 /* Insert security data as in NTFS v1.x */
#define OWNERFROMACL 1 /* Get the owner from ACL (not Windows owner) */
/* default security sub-authorities */
enum {
DEFSECAUTH1 = -1153374643, /* 3141592653 */
DEFSECAUTH2 = 589793238,
DEFSECAUTH3 = 462843383,
DEFSECBASE = 10000
};
/*
* Parameters for compression
*/
/* default option for compression */
#define DEFAULT_COMPRESSION 1
/* (log2 of) number of clusters in a compression block for new files */
#define STANDARD_COMPRESSION_UNIT 4
/* maximum cluster size for allowing compression for new files */
#define MAX_COMPRESSION_CLUSTER_SIZE 4096
/*
* Parameters for default options
*/
#define DEFAULT_DMTIME 60 /* default 1mn for delay_mtime */
/*
* Use of big write buffers
*
* With small volumes, the cluster allocator may fail to allocate
* enough clusters when the volume is nearly full. At most a run
* can be allocated per bitmap chunk. So, there is a danger when the
* number of chunks (capacity/(32768*clsiz)) is less than the number
* of clusters in the biggest write buffer (131072/clsiz). Hence
* a safe minimal capacity is 4GB
*/
#define SAFE_CAPACITY_FOR_BIG_WRITES 0x100000000LL
/*
* Parameters for runlists
*/
/* only update the final extent of a runlist when appending data */
#define PARTIAL_RUNLIST_UPDATING 1
/*
* Parameters for upper-case table
*/
/* Create upper-case tables as defined by Windows 6.1 (Win7) */
#define UPCASE_MAJOR 6
#define UPCASE_MINOR 1
/*
* Parameters for user and xattr mappings
*/
#define XATTRMAPPINGFILE ".NTFS-3G/XattrMapping" /* default mapping file */
/*
* Parameters for path canonicalization
*/
#define MAPPERNAMELTH 256
/*
* Permission checking modes for high level and low level
*
* The choices for high and low lowel are independent, they have
* no effect on the library
*
* Stick to the recommended values unless you understand the consequences
* on protection and performances. Use of cacheing is good for
* performances, but bad on security with internal fuse or external
* fuse older than 2.8
*
* On Linux, cacheing is discouraged for the high level interface
* in order to get proper support of hard links. As a consequence,
* having access control in the file system leads to fewer requests
* to the file system and fewer context switches.
*
* Possible values for high level :
* 1 : no cache, kernel control (recommended)
* 4 : no cache, file system control
* 6 : kernel/fuse cache, file system control (OpenIndiana only)
* 7 : no cache, kernel control for ACLs
*
* Possible values for low level :
* 2 : no cache, kernel control
* 3 : use kernel/fuse cache, kernel control (recommended)
* 5 : no cache, file system control
* 6 : kernel/fuse cache, file system control (OpenIndiana only)
* 8 : no cache, kernel control for ACLs
* 9 : kernel/fuse cache, kernel control for ACLs (target)
*
* Use of options 7, 8 and 9 requires a fuse module upgrade
* When Posix ACLs are selected in the configure options, a value
* of 6 is added in the mount report.
*/
#if defined(__sun) && defined(__SVR4)
/*
* Access control by kernel is not implemented on OpenIndiana,
* however care is taken of cacheing hard-linked files.
*/
#define HPERMSCONFIG 6
#define LPERMSCONFIG 6
#else /* defined(__sun) && defined(__SVR4) */
/*
* Cacheing by kernel is buggy on Linux when access control is done
* by the file system, and also when using hard-linked files on
* the fuse high level interface.
*/
#define HPERMSCONFIG 1
#define LPERMSCONFIG 3 /* Use 9 when ACLs are supported by fuse kernel */
#endif /* defined(__sun) && defined(__SVR4) */
#endif /* defined _NTFS_PARAM_H */
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