1#ifndef _SAMBA_LINUX_QUOTA_H_ 2#define _SAMBA_LINUX_QUOTA_H_ 3/* 4 Unix SMB/CIFS implementation. 5 Copyright (C) Andrew Tridgell 1994-2002 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20*/ 21 22/* 23 This file is needed because Quota support on Linux has 24 been broken since Linus kernel 2.4.x. It will only get 25 better (and this file be removed) when all the distributions 26 ship a glibc with a working quota.h file. This is very 27 bad. JRA. 28 29 Original file came from Christoph Hellwig <hch@infradead.org>. 30 Massaged into one nasty include file (to stop us having to 31 add multiple files into Samba just for Linux braindamage) 32 by JRA. 33*/ 34 35#undef QUOTABLOCK_SIZE 36 37#ifndef _QUOTAIO_LINUX_V1 38#define _QUOTAIO_LINUX_V1 39 40/* 41 * Headerfile for old quotafile format 42 */ 43 44#include <sys/types.h> 45 46#define V1_DQBLK_SIZE_BITS 10 47#define V1_DQBLK_SIZE (1 << V1_DQBLK_SIZE_BITS) /* Size of one quota block in bytes in old format */ 48 49#define V1_DQOFF(__id) ((loff_t) ((__id) * sizeof(struct v1_disk_dqblk))) 50 51/* Structure of quota on disk */ 52struct v1_disk_dqblk { 53 u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */ 54 u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */ 55 u_int32_t dqb_curblocks; /* current block count */ 56 u_int32_t dqb_ihardlimit; /* maximum # allocated inodes */ 57 u_int32_t dqb_isoftlimit; /* preferred limit on inodes */ 58 u_int32_t dqb_curinodes; /* current # allocated inodes */ 59 time_t dqb_btime; /* time limit for excessive disk use */ 60 time_t dqb_itime; /* time limit for excessive files */ 61} __attribute__ ((packed)); 62 63/* Structure used for communication with kernel */ 64struct v1_kern_dqblk { 65 u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */ 66 u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */ 67 u_int32_t dqb_curblocks; /* current block count */ 68 u_int32_t dqb_ihardlimit; /* maximum # allocated inodes */ 69 u_int32_t dqb_isoftlimit; /* preferred inode limit */ 70 u_int32_t dqb_curinodes; /* current # allocated inodes */ 71 time_t dqb_btime; /* time limit for excessive disk use */ 72 time_t dqb_itime; /* time limit for excessive files */ 73}; 74 75struct v1_dqstats { 76 u_int32_t lookups; 77 u_int32_t drops; 78 u_int32_t reads; 79 u_int32_t writes; 80 u_int32_t cache_hits; 81 u_int32_t allocated_dquots; 82 u_int32_t free_dquots; 83 u_int32_t syncs; 84}; 85 86#ifndef Q_V1_GETQUOTA 87#define Q_V1_GETQUOTA 0x300 88#endif 89#ifndef Q_V1_SETQUOTA 90#define Q_V1_SETQUOTA 0x400 91#endif 92 93#endif /* _QUOTAIO_LINUX_V1 */ 94 95/* 96 * 97 * Header file for disk format of new quotafile format 98 * 99 */ 100 101#ifndef _QUOTAIO_LINUX_V2 102#define _QUOTAIO_LINUX_V2 103 104#include <sys/types.h> 105 106#ifndef _QUOTA_LINUX 107#define _QUOTA_LINUX 108 109#include <sys/types.h> 110 111typedef u_int32_t qid_t; /* Type in which we store ids in memory */ 112typedef u_int64_t qsize_t; /* Type in which we store size limitations */ 113 114#define MAXQUOTAS 2 115#define USRQUOTA 0 /* element used for user quotas */ 116#define GRPQUOTA 1 /* element used for group quotas */ 117 118/* 119 * Definitions for the default names of the quotas files. 120 */ 121#define INITQFNAMES { \ 122 "user", /* USRQUOTA */ \ 123 "group", /* GRPQUOTA */ \ 124 "undefined", \ 125} 126 127/* 128 * Definitions of magics and versions of current quota files 129 */ 130#define INITQMAGICS {\ 131 0xd9c01f11, /* USRQUOTA */\ 132 0xd9c01927 /* GRPQUOTA */\ 133} 134 135/* Size of blocks in which are counted size limits in generic utility parts */ 136#define QUOTABLOCK_BITS 10 137#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) 138 139/* Conversion routines from and to quota blocks */ 140#define qb2kb(x) ((x) << (QUOTABLOCK_BITS-10)) 141#define kb2qb(x) ((x) >> (QUOTABLOCK_BITS-10)) 142#define toqb(x) (((x) + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS) 143 144/* 145 * Command definitions for the 'quotactl' system call. 146 * The commands are broken into a main command defined below 147 * and a subcommand that is used to convey the type of 148 * quota that is being manipulated (see above). 149 */ 150#define SUBCMDMASK 0x00ff 151#define SUBCMDSHIFT 8 152#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK)) 153 154#define Q_6_5_QUOTAON 0x0100 /* enable quotas */ 155#define Q_6_5_QUOTAOFF 0x0200 /* disable quotas */ 156#define Q_6_5_SYNC 0x0600 /* sync disk copy of a filesystems quotas */ 157 158#define Q_SYNC 0x800001 /* sync disk copy of a filesystems quotas */ 159#define Q_QUOTAON 0x800002 /* turn quotas on */ 160#define Q_QUOTAOFF 0x800003 /* turn quotas off */ 161#define Q_GETFMT 0x800004 /* get quota format used on given filesystem */ 162#define Q_GETINFO 0x800005 /* get information about quota files */ 163#define Q_SETINFO 0x800006 /* set information about quota files */ 164#define Q_GETQUOTA 0x800007 /* get user quota structure */ 165#define Q_SETQUOTA 0x800008 /* set user quota structure */ 166 167/* 168 * Quota structure used for communication with userspace via quotactl 169 * Following flags are used to specify which fields are valid 170 */ 171#define QIF_BLIMITS 1 172#define QIF_SPACE 2 173#define QIF_ILIMITS 4 174#define QIF_INODES 8 175#define QIF_BTIME 16 176#define QIF_ITIME 32 177#define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS) 178#define QIF_USAGE (QIF_SPACE | QIF_INODES) 179#define QIF_TIMES (QIF_BTIME | QIF_ITIME) 180#define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES) 181 182struct if_dqblk { 183 u_int64_t dqb_bhardlimit; 184 u_int64_t dqb_bsoftlimit; 185 u_int64_t dqb_curspace; 186 u_int64_t dqb_ihardlimit; 187 u_int64_t dqb_isoftlimit; 188 u_int64_t dqb_curinodes; 189 u_int64_t dqb_btime; 190 u_int64_t dqb_itime; 191 u_int32_t dqb_valid; 192}; 193 194/* 195 * Structure used for setting quota information about file via quotactl 196 * Following flags are used to specify which fields are valid 197 */ 198#define IIF_BGRACE 1 199#define IIF_IGRACE 2 200#define IIF_FLAGS 4 201#define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS) 202 203struct if_dqinfo { 204 u_int64_t dqi_bgrace; 205 u_int64_t dqi_igrace; 206 u_int32_t dqi_flags; 207 u_int32_t dqi_valid; 208}; 209 210/* Quota format identifiers */ 211#define QFMT_VFS_OLD 1 212#define QFMT_VFS_V0 2 213 214/* Flags supported by kernel */ 215#define V1_DQF_RSQUASH 1 216 217/* Ioctl for getting quota size */ 218#include <sys/ioctl.h> 219#ifndef FIOQSIZE 220 #if defined(__alpha__) || defined(__powerpc__) || defined(__sh__) || defined(__sparc__) || defined(__sparc64__) 221 #define FIOQSIZE _IOR('f', 128, loff_t) 222 #elif defined(__arm__) || defined(__mc68000__) || defined(__s390__) 223 #define FIOQSIZE 0x545E 224 #elif defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__ia64__) || defined(__parisc__) || defined(__cris__) || defined(__hppa__) 225 #define FIOQSIZE 0x5460 226 #elif defined(__mips__) || defined(__mips64__) 227 #define FIOQSIZE 0x6667 228 #endif 229#endif 230 231long quotactl __P((int, const char *, qid_t, caddr_t)); 232 233#endif /* _QUOTA_LINUX */ 234 235#define V2_DQINFOOFF sizeof(struct v2_disk_dqheader) /* Offset of info header in file */ 236#define V2_DQBLKSIZE_BITS 10 237#define V2_DQBLKSIZE (1 << V2_DQBLKSIZE_BITS) /* Size of block with quota structures */ 238#define V2_DQTREEOFF 1 /* Offset of tree in file in blOcks */ 239#define V2_DQTREEDEPTH 4 /* Depth of quota tree */ 240#define V2_DQSTRINBLK ((V2_DQBLKSIZE - sizeof(struct v2_disk_dqdbheader)) / sizeof(struct v2_disk_dqblk)) /* Number of entries in one blocks */ 241#define V2_GETIDINDEX(id, depth) (((id) >> ((V2_DQTREEDEPTH-(depth)-1)*8)) & 0xff) 242#define V2_GETENTRIES(buf) ((struct v2_disk_dqblk *)(((char *)(buf)) + sizeof(struct v2_disk_dqdbheader))) 243#define INIT_V2_VERSIONS { 0, 0} 244 245struct v2_disk_dqheader { 246 u_int32_t dqh_magic; /* Magic number identifying file */ 247 u_int32_t dqh_version; /* File version */ 248} __attribute__ ((packed)); 249 250/* Flags for version specific files */ 251#define V2_DQF_MASK 0x0000 /* Mask for all valid ondisk flags */ 252 253/* Header with type and version specific information */ 254struct v2_disk_dqinfo { 255 u_int32_t dqi_bgrace; /* Time before block soft limit becomes hard limit */ 256 u_int32_t dqi_igrace; /* Time before inode soft limit becomes hard limit */ 257 u_int32_t dqi_flags; /* Flags for quotafile (DQF_*) */ 258 u_int32_t dqi_blocks; /* Number of blocks in file */ 259 u_int32_t dqi_free_blk; /* Number of first free block in the list */ 260 u_int32_t dqi_free_entry; /* Number of block with at least one free entry */ 261} __attribute__ ((packed)); 262 263/* 264 * Structure of header of block with quota structures. It is padded to 16 bytes so 265 * there will be space for exactly 18 quota-entries in a block 266 */ 267struct v2_disk_dqdbheader { 268 u_int32_t dqdh_next_free; /* Number of next block with free entry */ 269 u_int32_t dqdh_prev_free; /* Number of previous block with free entry */ 270 u_int16_t dqdh_entries; /* Number of valid entries in block */ 271 u_int16_t dqdh_pad1; 272 u_int32_t dqdh_pad2; 273} __attribute__ ((packed)); 274 275/* Structure of quota for one user on disk */ 276struct v2_disk_dqblk { 277 u_int32_t dqb_id; /* id this quota applies to */ 278 u_int32_t dqb_ihardlimit; /* absolute limit on allocated inodes */ 279 u_int32_t dqb_isoftlimit; /* preferred inode limit */ 280 u_int32_t dqb_curinodes; /* current # allocated inodes */ 281 u_int32_t dqb_bhardlimit; /* absolute limit on disk space (in QUOTABLOCK_SIZE) */ 282 u_int32_t dqb_bsoftlimit; /* preferred limit on disk space (in QUOTABLOCK_SIZE) */ 283 u_int64_t dqb_curspace; /* current space occupied (in bytes) */ 284 u_int64_t dqb_btime; /* time limit for excessive disk use */ 285 u_int64_t dqb_itime; /* time limit for excessive inode use */ 286} __attribute__ ((packed)); 287 288/* Structure of quota for communication with kernel */ 289struct v2_kern_dqblk { 290 unsigned int dqb_ihardlimit; 291 unsigned int dqb_isoftlimit; 292 unsigned int dqb_curinodes; 293 unsigned int dqb_bhardlimit; 294 unsigned int dqb_bsoftlimit; 295 qsize_t dqb_curspace; 296 time_t dqb_btime; 297 time_t dqb_itime; 298}; 299 300/* Structure of quotafile info for communication with kernel */ 301struct v2_kern_dqinfo { 302 unsigned int dqi_bgrace; 303 unsigned int dqi_igrace; 304 unsigned int dqi_flags; 305 unsigned int dqi_blocks; 306 unsigned int dqi_free_blk; 307 unsigned int dqi_free_entry; 308}; 309 310/* Structure with gathered statistics from kernel */ 311struct v2_dqstats { 312 u_int32_t lookups; 313 u_int32_t drops; 314 u_int32_t reads; 315 u_int32_t writes; 316 u_int32_t cache_hits; 317 u_int32_t allocated_dquots; 318 u_int32_t free_dquots; 319 u_int32_t syncs; 320 u_int32_t version; 321}; 322 323#ifndef Q_V2_GETQUOTA 324#define Q_V2_GETQUOTA 0x0D00 325#endif 326#ifndef Q_V2_SETQUOTA 327#define Q_V2_SETQUOTA 0x0E00 328#endif 329 330#endif /* _QUOTAIO_LINUX_V2 */ 331 332#ifndef QUOTABLOCK_SIZE 333#define QUOTABLOCK_SIZE 1024 334#endif 335 336#endif /* _SAMBA_LINUX_QUOTA_H_ */ 337