1 /* 2 * param.h - Parameter values for ntfs-3g 3 * 4 * Copyright (c) 2009-2010 Jean-Pierre Andre 5 * 6 * This program/include file is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as published 8 * by the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program/include file is distributed in the hope that it will be 12 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program (in the main directory of the NTFS-3G 18 * distribution in the file COPYING); if not, write to the Free Software 19 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #ifndef _NTFS_PARAM_H 23 #define _NTFS_PARAM_H 24 25 #define CACHE_INODE_SIZE 32 /* inode cache, zero or >= 3 and not too big */ 26 #define CACHE_NIDATA_SIZE 64 /* idata cache, zero or >= 3 and not too big */ 27 #define CACHE_LOOKUP_SIZE 64 /* lookup cache, zero or >= 3 and not too big */ 28 #define CACHE_SECURID_SIZE 16 /* securid cache, zero or >= 3 and not too big */ 29 #define CACHE_LEGACY_SIZE 8 /* legacy cache size, zero or >= 3 and not too big */ 30 31 #define FORCE_FORMAT_v1x 0 /* Insert security data as in NTFS v1.x */ 32 #define OWNERFROMACL 1 /* Get the owner from ACL (not Windows owner) */ 33 34 /* default security sub-authorities */ 35 enum { 36 DEFSECAUTH1 = -1153374643, /* 3141592653 */ 37 DEFSECAUTH2 = 589793238, 38 DEFSECAUTH3 = 462843383, 39 DEFSECBASE = 10000 40 }; 41 42 /* 43 * Parameters for compression 44 */ 45 46 /* default option for compression */ 47 #define DEFAULT_COMPRESSION 1 48 /* (log2 of) number of clusters in a compression block for new files */ 49 #define STANDARD_COMPRESSION_UNIT 4 50 /* maximum cluster size for allowing compression for new files */ 51 #define MAX_COMPRESSION_CLUSTER_SIZE 4096 52 53 /* 54 * Use of big write buffers 55 * 56 * With small volumes, the cluster allocator may fail to allocate 57 * enough clusters when the volume is nearly full. At most a run 58 * can be allocated per bitmap chunk. So, there is a danger when the 59 * number of chunks (capacity/(32768*clsiz)) is less than the number 60 * of clusters in the biggest write buffer (131072/clsiz). Hence 61 * a safe minimal capacity is 4GB 62 */ 63 64 #define SAFE_CAPACITY_FOR_BIG_WRITES 0x100000000LL 65 66 /* 67 * Parameters for runlists 68 */ 69 70 /* only update the final extent of a runlist when appending data */ 71 #define PARTIAL_RUNLIST_UPDATING 1 72 73 /* 74 * Parameters for user and xattr mappings 75 */ 76 77 #define XATTRMAPPINGFILE ".NTFS-3G/XattrMapping" /* default mapping file */ 78 79 /* 80 * Parameters for path canonicalization 81 */ 82 83 #define MAPPERNAMELTH 256 84 85 /* 86 * Permission checking modes for high level and low level 87 * 88 * The choices for high and low lowel are independent, they have 89 * no effect on the library 90 * 91 * Stick to the recommended values unless you understand the consequences 92 * on protection and performances. Use of cacheing is good for 93 * performances, but bad on security with internal fuse or external 94 * fuse older than 2.8 95 * 96 * Possible values for high level : 97 * 1 : no cache, kernel control (recommended) 98 * 4 : no cache, file system control 99 * 7 : no cache, kernel control for ACLs 100 * 101 * Possible values for low level : 102 * 2 : no cache, kernel control 103 * 3 : use kernel/fuse cache, kernel control (external fuse >= 2.8) 104 * 5 : no cache, file system control (recommended) 105 * 8 : no cache, kernel control for ACLs 106 * 107 * Use of options 7 and 8 requires a patch to fuse 108 * When Posix ACLs are selected in the configure options, a value 109 * of 6 is added in the mount report. 110 */ 111 112 #define HPERMSCONFIG 1 113 #if defined(FUSE_INTERNAL) || !defined(FUSE_VERSION) || (FUSE_VERSION < 28) 114 #define LPERMSCONFIG 5 115 #else 116 #define LPERMSCONFIG 3 117 #endif 118 119 #endif /* defined _NTFS_PARAM_H */ 120